78537941792 has 54 divisors (see below), whose sum is σ = 156417973803. Its totient is φ = 38817949632.

The previous prime is 78537941789. The next prime is 78537941803. The reversal of 78537941792 is 29714973587.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 39268970896 + 39268970896 = 198164^2 + 198164^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=198164.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 169628153 + ... + 169628615.

Almost surely, 2^78537941792 is an apocalyptic number.

It is an amenable number.

78537941792 is a deficient number, since it is larger than the sum of its proper divisors (77880032011).

78537941792 is an frugal number, since it uses more digits than its factorization.

78537941792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 572 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 62.

The spelling of 78537941792 in words is "seventy-eight billion, five hundred thirty-seven million, nine hundred forty-one thousand, seven hundred ninety-two".