78053739520 has 44 divisors (see below), whose sum is σ = 187237517904. Its totient is φ = 31221493760.

The previous prime is 78053739493. The next prime is 78053739521. The reversal of 78053739520 is 2593735087.

It is not an unprimeable number, because it can be changed into a prime (78053739521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7617316 + ... + 7627555.

Almost surely, 2^78053739520 is an apocalyptic number.

It is an amenable number.

78053739520 is an abundant number, since it is smaller than the sum of its proper divisors (109183778384).

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

78053739520 is a wasteful number, since it uses less digits than its factorization.

78053739520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15244896 (or 15244878 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 78053739520 in words is "seventy-eight billion, fifty-three million, seven hundred thirty-nine thousand, five hundred twenty".