78504338317572 has 96 divisors (see below), whose sum is σ = 213731619091200. Its totient is φ = 24870939515136.

The previous prime is 78504338317523. The next prime is 78504338317577. The reversal of 78504338317572 is 27571383340587.

78504338317572 is a `hidden beast` number, since 7 + 8 + 5 + 0 + 43 + 3 + 8 + 3 + 17 + 572 = 666.

It is a super-2 number, since 2×78504338317572² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78504338317577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100259697 + ... + 101039672.

It is an arithmetic number, because the mean of its divisors is an integer number (2226371032200).

Almost surely, 2^{78504338317572} is an apocalyptic number.

It is an amenable number.

78504338317572 is an abundant number, since it is smaller than the sum of its proper divisors (135227280773628).

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

78504338317572 is a wasteful number, since it uses less digits than its factorization.

78504338317572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201299562 (or 201299554 counting only the distinct ones).

The product of its (nonzero) digits is 118540800, while the sum is 63.

The spelling of 78504338317572 in words is "seventy-eight trillion, five hundred four billion, three hundred thirty-eight million, three hundred seventeen thousand, five hundred seventy-two".