139423524856 has 96 divisors (see below), whose sum is σ = 329559189120. Its totient is φ = 54128162880.

The previous prime is 139423524847. The next prime is 139423524881. The reversal of 139423524856 is 658425324931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1881255 + ... + 1953961.

It is an arithmetic number, because the mean of its divisors is an integer number (3432908220).

Almost surely, 2^139423524856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139423524856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164779594560).

139423524856 is an abundant number, since it is smaller than the sum of its proper divisors (190135664264).

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

139423524856 is a wasteful number, since it uses less digits than its factorization.

139423524856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73025 (or 73010 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 52.

The spelling of 139423524856 in words is "one hundred thirty-nine billion, four hundred twenty-three million, five hundred twenty-four thousand, eight hundred fifty-six".