78518611824 has 80 divisors (see below), whose sum is σ = 224109441792. Its totient is φ = 23562271744.

The previous prime is 78518611789. The next prime is 78518611849. The reversal of 78518611824 is 42811681587.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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, 2073054 + ... + 2110589.

Almost surely, 2^78518611824 is an apocalyptic number.

It is an amenable number.

78518611824 is an abundant number, since it is smaller than the sum of its proper divisors (145590829968).

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

78518611824 is a wasteful number, since it uses less digits than its factorization.

78518611824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183694 (or 4183688 counting only the distinct ones).

The product of its digits is 860160, while the sum is 51.

The spelling of 78518611824 in words is "seventy-eight billion, five hundred eighteen million, six hundred eleven thousand, eight hundred twenty-four".