139997717568 has 84 divisors (see below), whose sum is σ = 402585783600. Its totient is φ = 46513840896.

The previous prime is 139997717479. The next prime is 139997717579. The reversal of 139997717568 is 865717799931.

139997717568 is a `hidden beast` number, since 1 + 399 + 9 + 7 + 7 + 175 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 139997717496 and 139997717505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219018 + ... + 572681.

It is an arithmetic number, because the mean of its divisors is an integer number (4792687900).

Almost surely, 2^139997717568 is an apocalyptic number.

139997717568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139997717568 is an abundant number, since it is smaller than the sum of its proper divisors (262588066032).

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

139997717568 is a wasteful number, since it uses less digits than its factorization.

139997717568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792024 (or 792011 counting only the distinct ones).

The product of its digits is 180033840, while the sum is 72.

The spelling of 139997717568 in words is "one hundred thirty-nine billion, nine hundred ninety-seven million, seven hundred seventeen thousand, five hundred sixty-eight".