78177728673352 has 64 divisors (see below), whose sum is σ = 184806538070400. Its totient is φ = 30116620976640.

The previous prime is 78177728673347. The next prime is 78177728673361. The reversal of 78177728673352 is 25337682777187.

It is a super-2 number, since 2×78177728673352² (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, 712933363 + ... + 713043010.

It is an arithmetic number, because the mean of its divisors is an integer number (2887602157350).

Almost surely, 2^{78177728673352} is an apocalyptic number.

It is an amenable number.

78177728673352 is an abundant number, since it is smaller than the sum of its proper divisors (106628809397048).

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

78177728673352 is a wasteful number, since it uses less digits than its factorization.

78177728673352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425976486 (or 1425976482 counting only the distinct ones).

The product of its digits is 1161699840, while the sum is 73.

The spelling of 78177728673352 in words is "seventy-eight trillion, one hundred seventy-seven billion, seven hundred twenty-eight million, six hundred seventy-three thousand, three hundred fifty-two".