Search a number
-
+
85127703871 = 721788197159
BaseRepresentation
bin100111101001000000…
…0011010110100111111
322010201200210102100011
41033102000122310333
52343320143010441
6103035050044051
76102354354400
oct1172200326477
9263650712304
1085127703871
1133114407981
12145b9119627
138048587012
144197b9d9a7
15233374d581
hex13d201ad3f

85127703871 has 12 divisors (see below), whose sum is σ = 99032661840. Its totient is φ = 72961771680.

The previous prime is 85127703863. The next prime is 85127703919. The reversal of 85127703871 is 17830772158.

It is not a de Polignac number, because 85127703871 - 23 = 85127703863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85127703821) 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 11 ways as a sum of consecutive naturals, for example, 827590 + ... + 924748.

It is an arithmetic number, because the mean of its divisors is an integer number (8252721820).

Almost surely, 285127703871 is an apocalyptic number.

85127703871 is a deficient number, since it is larger than the sum of its proper divisors (13904957969).

85127703871 is a wasteful number, since it uses less digits than its factorization.

85127703871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115054 (or 115047 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 49.

The spelling of 85127703871 in words is "eighty-five billion, one hundred twenty-seven million, seven hundred three thousand, eight hundred seventy-one".

Divisors: 1 7 49 17881 97159 125167 680113 876169 4760791 1737300079 12161100553 85127703871