78648195724 has 24 divisors (see below), whose sum is σ = 159875024288. Its totient is φ = 33153805440.

The previous prime is 78648195683. The next prime is 78648195751. The reversal of 78648195724 is 42759184687.

It is a super-2 number, since 2×78648195724² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23021769 + ... + 23025184.

Almost surely, 2^78648195724 is an apocalyptic number.

It is an amenable number.

78648195724 is an abundant number, since it is smaller than the sum of its proper divisors (81226828564).

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

78648195724 is a wasteful number, since it uses less digits than its factorization.

78648195724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46047025 (or 46047023 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 61.

The spelling of 78648195724 in words is "seventy-eight billion, six hundred forty-eight million, one hundred ninety-five thousand, seven hundred twenty-four".