139294368820 has 12 divisors (see below), whose sum is σ = 292518174564. Its totient is φ = 55717747520.

The previous prime is 139294368809. The next prime is 139294368923. The reversal of 139294368820 is 28863492931.

It can be written as a sum of positive squares in 2 ways, for example, as 91947219984 + 47347148836 = 303228^2 + 217594^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3482359201 + ... + 3482359240.

It is an arithmetic number, because the mean of its divisors is an integer number (24376514547).

Almost surely, 2^139294368820 is an apocalyptic number.

139294368820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139294368820 is an abundant number, since it is smaller than the sum of its proper divisors (153223805744).

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

139294368820 is a wasteful number, since it uses less digits than its factorization.

139294368820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6964718450 (or 6964718448 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 139294368820 in words is "one hundred thirty-nine billion, two hundred ninety-four million, three hundred sixty-eight thousand, eight hundred twenty".