123679683778 has 32 divisors (see below), whose sum is σ = 219681480960. Its totient is φ = 51096588480.

The previous prime is 123679683763. The next prime is 123679683781. The reversal of 123679683778 is 877386976321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14800 + ... + 497572.

It is an arithmetic number, because the mean of its divisors is an integer number (6865046280).

Almost surely, 2^123679683778 is an apocalyptic number.

123679683778 is a deficient number, since it is larger than the sum of its proper divisors (96001797182).

123679683778 is a wasteful number, since it uses less digits than its factorization.

123679683778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483442.

The product of its digits is 128024064, while the sum is 67.

The spelling of 123679683778 in words is "one hundred twenty-three billion, six hundred seventy-nine million, six hundred eighty-three thousand, seven hundred seventy-eight".