78346127872 has 40 divisors (see below), whose sum is σ = 159105516372. Its totient is φ = 38530867200.

The previous prime is 78346127861. The next prime is 78346127927. The reversal of 78346127872 is 27872164387.

It can be written as a sum of positive squares in 2 ways, for example, as 63980667136 + 14365460736 = 252944^2 + 119856^2 .

It is a super-2 number, since 2×78346127872² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223029 + ... + 1285492.

Almost surely, 2^78346127872 is an apocalyptic number.

It is an amenable number.

78346127872 is an abundant number, since it is smaller than the sum of its proper divisors (80759388500).

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

78346127872 is an equidigital number, since it uses as much as digits as its factorization.

78346127872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508600 (or 2508584 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 55.

The spelling of 78346127872 in words is "seventy-eight billion, three hundred forty-six million, one hundred twenty-seven thousand, eight hundred seventy-two".