78385411924 has 48 divisors (see below), whose sum is σ = 151437686400. Its totient is φ = 35335149696.

The previous prime is 78385411889. The next prime is 78385411969. The reversal of 78385411924 is 42911458387.

It is a super-2 number, since 2×78385411924² (a number of 23 digits) contains 22 as substring.

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, 230542 + ... + 458170.

It is an arithmetic number, because the mean of its divisors is an integer number (3154951800).

Almost surely, 2^78385411924 is an apocalyptic number.

It is an amenable number.

78385411924 is a deficient number, since it is larger than the sum of its proper divisors (73052274476).

78385411924 is a wasteful number, since it uses less digits than its factorization.

78385411924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227872 (or 227870 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The spelling of 78385411924 in words is "seventy-eight billion, three hundred eighty-five million, four hundred eleven thousand, nine hundred twenty-four".