139539628420 has 48 divisors (see below), whose sum is σ = 294986865600. Its totient is φ = 55444093056.

The previous prime is 139539628399. The next prime is 139539628451. The reversal of 139539628420 is 24826935931.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6780306 + ... + 6800854.

It is an arithmetic number, because the mean of its divisors is an integer number (6145559700).

Almost surely, 2^139539628420 is an apocalyptic number.

139539628420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139539628420 is an abundant number, since it is smaller than the sum of its proper divisors (155447237180).

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

139539628420 is a wasteful number, since it uses less digits than its factorization.

139539628420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22804 (or 22802 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 139539628420 in words is "one hundred thirty-nine billion, five hundred thirty-nine million, six hundred twenty-eight thousand, four hundred twenty".