139568635920 has 480 divisors, whose sum is σ = 552605131008. Its totient is φ = 28442492928.

The previous prime is 139568635889. The next prime is 139568635957. The reversal of 139568635920 is 29536865931.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10303392 + ... + 10316928.

Almost surely, 2^139568635920 is an apocalyptic number.

139568635920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139568635920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276302565504).

139568635920 is an abundant number, since it is smaller than the sum of its proper divisors (413036495088).

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

139568635920 is a wasteful number, since it uses less digits than its factorization.

139568635920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13615 (or 13590 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 139568635920 in words is "one hundred thirty-nine billion, five hundred sixty-eight million, six hundred thirty-five thousand, nine hundred twenty".