78530547631656 has 64 divisors (see below), whose sum is σ = 202276681128000. Its totient is φ = 25387994930688.

The previous prime is 78530547631643. The next prime is 78530547631663. The reversal of 78530547631656 is 65613674503587.

It is a super-2 number, since 2×78530547631656² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140992506 + ... + 141548393.

It is an arithmetic number, because the mean of its divisors is an integer number (3160573142625).

Almost surely, 2^{78530547631656} is an apocalyptic number.

It is an amenable number.

78530547631656 is an abundant number, since it is smaller than the sum of its proper divisors (123746133496344).

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

78530547631656 is a wasteful number, since it uses less digits than its factorization.

78530547631656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282541258 (or 282541254 counting only the distinct ones).

The product of its (nonzero) digits is 381024000, while the sum is 66.

The spelling of 78530547631656 in words is "seventy-eight trillion, five hundred thirty billion, five hundred forty-seven million, six hundred thirty-one thousand, six hundred fifty-six".