78657527040 has 144 divisors (see below), whose sum is σ = 262135052928. Its totient is φ = 20063346688.

The previous prime is 78657526963. The next prime is 78657527147. The reversal of 78657527040 is 4072575687.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356979 + ... + 533618.

It is an arithmetic number, because the mean of its divisors is an integer number (1820382312).

Almost surely, 2^78657527040 is an apocalyptic number.

It is an amenable number.

78657527040 is an abundant number, since it is smaller than the sum of its proper divisors (183477525888).

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

78657527040 is a wasteful number, since it uses less digits than its factorization.

78657527040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890644 (or 890630 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 51.

The spelling of 78657527040 in words is "seventy-eight billion, six hundred fifty-seven million, five hundred twenty-seven thousand, forty".