123869031966 has 96 divisors (see below), whose sum is σ = 277250070240. Its totient is φ = 39945249792.

The previous prime is 123869031943. The next prime is 123869031971. The reversal of 123869031966 is 669130968321.

123869031966 is a `hidden beast` number, since 1 + 238 + 6 + 90 + 319 + 6 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60334596 + ... + 60336648.

It is an arithmetic number, because the mean of its divisors is an integer number (2888021565).

Almost surely, 2^123869031966 is an apocalyptic number.

123869031966 is an abundant number, since it is smaller than the sum of its proper divisors (153381038274).

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

123869031966 is a wasteful number, since it uses less digits than its factorization.

123869031966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 123869031966 in words is "one hundred twenty-three billion, eight hundred sixty-nine million, thirty-one thousand, nine hundred sixty-six".