139861626960 has 80 divisors (see below), whose sum is σ = 472986601920. Its totient is φ = 33905848320.

The previous prime is 139861626937. The next prime is 139861626991. The reversal of 139861626960 is 69626168931.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×139861626960² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139861626960.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 26486305 + ... + 26491584.

It is an arithmetic number, because the mean of its divisors is an integer number (5912332524).

Almost surely, 2^139861626960 is an apocalyptic number.

139861626960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139861626960 is an abundant number, since it is smaller than the sum of its proper divisors (333124974960).

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

139861626960 is a wasteful number, since it uses less digits than its factorization.

139861626960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52977916 (or 52977910 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 139861626960 in words is "one hundred thirty-nine billion, eight hundred sixty-one million, six hundred twenty-six thousand, nine hundred sixty".