78890143612 has 48 divisors (see below), whose sum is σ = 166490311680. Its totient is φ = 31976664192.

The previous prime is 78890143609. The next prime is 78890143621. The reversal of 78890143612 is 21634109887.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630888 + ... + 745519.

It is an arithmetic number, because the mean of its divisors is an integer number (3468548160).

Almost surely, 2^78890143612 is an apocalyptic number.

It is an amenable number.

78890143612 is an abundant number, since it is smaller than the sum of its proper divisors (87600168068).

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

78890143612 is a wasteful number, since it uses less digits than its factorization.

78890143612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376530 (or 1376528 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 78890143612 in words is "seventy-eight billion, eight hundred ninety million, one hundred forty-three thousand, six hundred twelve".