Search a number
-
+
869820904375 = 5443161919991
BaseRepresentation
bin11001010100001010101…
…11011011001110110111
310002011011022111011211221
430222011113123032313
5103222343122420000
61503331252411211
7116561654461003
oct14520527331667
93064138434757
10869820904375
11305986251655
121206b1316b07
1364040278987
143015727b703
151795cd2761a
hexca855db3b7

869820904375 has 40 divisors (see below), whose sum is σ = 1112948242560. Its totient is φ = 679220220000.

The previous prime is 869820904361. The next prime is 869820904423. The reversal of 869820904375 is 573409028968.

It is a de Polignac number, because none of the positive numbers 2k-869820904375 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43500630 + ... + 43520620.

It is an arithmetic number, because the mean of its divisors is an integer number (27823706064).

Almost surely, 2869820904375 is an apocalyptic number.

869820904375 is a deficient number, since it is larger than the sum of its proper divisors (243127338185).

869820904375 is a wasteful number, since it uses less digits than its factorization.

869820904375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21673 (or 21658 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 869820904375 in words is "eight hundred sixty-nine billion, eight hundred twenty million, nine hundred four thousand, three hundred seventy-five".

Divisors: 1 5 25 43 125 215 625 1075 1619 5375 8095 19991 26875 40475 69617 99955 202375 348085 499775 859613 1011875 1740425 2498875 4298065 8702125 12494375 21490325 32365429 43510625 107451625 161827145 537258125 809135725 1391713447 4045678625 6958567235 20228393125 34792836175 173964180875 869820904375