139756304137 has 4 divisors (see below), whose sum is σ = 140528438596. Its totient is φ = 138984169680.

The previous prime is 139756304131. The next prime is 139756304141. The reversal of 139756304137 is 731403657931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4905041296 + 134851262841 = 70036^2 + 367221^2 .

It is a cyclic number.

It is not a de Polignac number, because 139756304137 - 2²³ = 139747915529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139756304131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386066958 + ... + 386067319.

It is an arithmetic number, because the mean of its divisors is an integer number (35132109649).

Almost surely, 2^139756304137 is an apocalyptic number.

It is an amenable number.

139756304137 is a deficient number, since it is larger than the sum of its proper divisors (772134459).

139756304137 is an equidigital number, since it uses as much as digits as its factorization.

139756304137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772134458.

The product of its (nonzero) digits is 1428840, while the sum is 49.

The spelling of 139756304137 in words is "one hundred thirty-nine billion, seven hundred fifty-six million, three hundred four thousand, one hundred thirty-seven".