78560027640 has 96 divisors (see below), whose sum is σ = 263556259200. Its totient is φ = 20273552640.

The previous prime is 78560027639. The next prime is 78560027677. The reversal of 78560027640 is 4672006587.

78560027640 is a `hidden beast` number, since 7 + 8 + 560 + 0 + 27 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3508555 + ... + 3530874.

It is an arithmetic number, because the mean of its divisors is an integer number (2745377700).

Almost surely, 2^78560027640 is an apocalyptic number.

It is an amenable number.

78560027640 is an abundant number, since it is smaller than the sum of its proper divisors (184996231560).

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

78560027640 is a wasteful number, since it uses less digits than its factorization.

78560027640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039477 (or 7039470 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 78560027640 in words is "seventy-eight billion, five hundred sixty million, twenty-seven thousand, six hundred forty".