78742388732 has 24 divisors (see below), whose sum is σ = 157494279264. Its totient is φ = 33744701952.

The previous prime is 78742388717. The next prime is 78742388741. The reversal of 78742388732 is 23788324787.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445748 + ... + 596804.

It is an arithmetic number, because the mean of its divisors is an integer number (6562261636).

Almost surely, 2^78742388732 is an apocalyptic number.

It is an amenable number.

78742388732 is an abundant number, since it is smaller than the sum of its proper divisors (78751890532).

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

78742388732 is a wasteful number, since it uses less digits than its factorization.

78742388732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169685 (or 169683 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 59.

The spelling of 78742388732 in words is "seventy-eight billion, seven hundred forty-two million, three hundred eighty-eight thousand, seven hundred thirty-two".