Search a number
-
+
2385424572881 = 74310972706409
BaseRepresentation
bin100010101101100110011…
…000100110000111010001
322110001012100011210202212
4202231212120212013101
5303040322142313011
65023503211121505
7334225021214330
oct42554630460721
98401170153685
102385424572881
1183a71aa90049
12326389a43295
13143c382bc90c
1483652d8bd17
15420b4ecb08b
hex22b666261d1

2385424572881 has 16 divisors (see below), whose sum is σ = 2815192195200. Its totient is φ = 1978777600128.

The previous prime is 2385424572859. The next prime is 2385424572893. The reversal of 2385424572881 is 1882754245832.

It is a de Polignac number, because none of the positive numbers 2k-2385424572881 is a prime.

It is a super-2 number, since 2×23854245728812 (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2385424572881.

It is not an unprimeable number, because it can be changed into a prime (2385424575881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36320396 + ... + 36386013.

It is an arithmetic number, because the mean of its divisors is an integer number (175949512200).

Almost surely, 22385424572881 is an apocalyptic number.

It is an amenable number.

2385424572881 is a deficient number, since it is larger than the sum of its proper divisors (429767622319).

2385424572881 is a wasteful number, since it uses less digits than its factorization.

2385424572881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72706568.

The product of its digits is 34406400, while the sum is 59.

The spelling of 2385424572881 in words is "two trillion, three hundred eighty-five billion, four hundred twenty-four million, five hundred seventy-two thousand, eight hundred eighty-one".

Divisors: 1 7 43 109 301 763 4687 32809 72706409 508944863 3126375587 7924998581 21884629109 55474990067 340774938983 2385424572881