139393797920 has 192 divisors, whose sum is σ = 376268820480. Its totient is φ = 48373936128.

The previous prime is 139393797919. The next prime is 139393797943. The reversal of 139393797920 is 29797393931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5005154 + ... + 5032926.

It is an arithmetic number, because the mean of its divisors is an integer number (1959733440).

Almost surely, 2^139393797920 is an apocalyptic number.

139393797920 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 139393797920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188134410240).

139393797920 is an abundant number, since it is smaller than the sum of its proper divisors (236875022560).

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

139393797920 is a wasteful number, since it uses less digits than its factorization.

139393797920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27947 (or 27939 counting only the distinct ones).

The product of its (nonzero) digits is 17360406, while the sum is 62.

The spelling of 139393797920 in words is "one hundred thirty-nine billion, three hundred ninety-three million, seven hundred ninety-seven thousand, nine hundred twenty".