78857765347032 has 128 divisors (see below), whose sum is σ = 250348366195200. Its totient is φ = 22530227241600.

The previous prime is 78857765346967. The next prime is 78857765347043. The reversal of 78857765347032 is 23074356775887.

78857765347032 is a `hidden beast` number, since 7 + 8 + 8 + 5 + 7 + 76 + 53 + 470 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

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 31 ways as a sum of consecutive naturals, for example, 61876807 + ... + 63138377.

It is an arithmetic number, because the mean of its divisors is an integer number (1955846610900).

Almost surely, 2^{78857765347032} is an apocalyptic number.

78857765347032 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78857765347032 is an abundant number, since it is smaller than the sum of its proper divisors (171490600848168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78857765347032 is a wasteful number, since it uses less digits than its factorization.

78857765347032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302934 (or 1302924 counting only the distinct ones).

The product of its (nonzero) digits is 1659571200, while the sum is 72.

The spelling of 78857765347032 in words is "seventy-eight trillion, eight hundred fifty-seven billion, seven hundred sixty-five million, three hundred forty-seven thousand, thirty-two".