123879339331978 has 8 divisors (see below), whose sum is σ = 185819058113472. Its totient is φ = 61939653294156.

The previous prime is 123879339331961. The next prime is 123879339331987. The reversal of 123879339331978 is 879133933978321.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 6649951 + ... + 17087437.

It is an arithmetic number, because the mean of its divisors is an integer number (23227382264184).

Almost surely, 2^{123879339331978} is an apocalyptic number.

123879339331978 is a deficient number, since it is larger than the sum of its proper divisors (61939718781494).

123879339331978 is a wasteful number, since it uses less digits than its factorization.

123879339331978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16371836.

The product of its digits is 1111065984, while the sum is 76.

The spelling of 123879339331978 in words is "one hundred twenty-three trillion, eight hundred seventy-nine billion, three hundred thirty-nine million, three hundred thirty-one thousand, nine hundred seventy-eight".