139011980923566 has 128 divisors (see below), whose sum is σ = 315913568256000. Its totient is φ = 45290308406112.

The previous prime is 139011980923489. The next prime is 139011980923577. The reversal of 139011980923566 is 665329089110931.

139011980923566 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 1 + 198 + 0 + 92 + 356 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10207202305 + ... + 10207215923.

It is an arithmetic number, because the mean of its divisors is an integer number (2468074752000).

Almost surely, 2^{139011980923566} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139011980923566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157956784128000).

139011980923566 is an abundant number, since it is smaller than the sum of its proper divisors (176901587332434).

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

139011980923566 is a wasteful number, since it uses less digits than its factorization.

139011980923566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18803 (or 18797 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 63.

The spelling of 139011980923566 in words is "one hundred thirty-nine trillion, eleven billion, nine hundred eighty million, nine hundred twenty-three thousand, five hundred sixty-six".