78890132736 has 108 divisors (see below), whose sum is σ = 235884320672. Its totient is φ = 26296690176.

The previous prime is 78890132627. The next prime is 78890132743. The reversal of 78890132736 is 63723109887.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571876 + ... + 696291.

Almost surely, 2^78890132736 is an apocalyptic number.

It is an amenable number.

78890132736 is an abundant number, since it is smaller than the sum of its proper divisors (156994187936).

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

78890132736 is an equidigital number, since it uses as much as digits as its factorization.

78890132736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268198 (or 1268172 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 78890132736 in words is "seventy-eight billion, eight hundred ninety million, one hundred thirty-two thousand, seven hundred thirty-six".