78508526836 has 24 divisors (see below), whose sum is σ = 140347622016. Its totient is φ = 38409617280.

The previous prime is 78508526801. The next prime is 78508526881. The reversal of 78508526836 is 63862580587.

It is a happy number.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748075 + ... + 846541.

It is an arithmetic number, because the mean of its divisors is an integer number (5847817584).

Almost surely, 2^78508526836 is an apocalyptic number.

It is an amenable number.

78508526836 is a deficient number, since it is larger than the sum of its proper divisors (61839095180).

78508526836 is a wasteful number, since it uses less digits than its factorization.

78508526836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102759 (or 102757 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 58.

The spelling of 78508526836 in words is "seventy-eight billion, five hundred eight million, five hundred twenty-six thousand, eight hundred thirty-six".