138926885737 has 4 divisors (see below), whose sum is σ = 139549876480. Its totient is φ = 138303894996.

The previous prime is 138926885731. The next prime is 138926885759. The reversal of 138926885737 is 737588629831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 737588629831 = 719 ⋅1025853449.

It is a cyclic number.

It is not a de Polignac number, because 138926885737 - 2³ = 138926885729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138926885731) 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, 311495037 + ... + 311495482.

It is an arithmetic number, because the mean of its divisors is an integer number (34887469120).

Almost surely, 2^138926885737 is an apocalyptic number.

It is an amenable number.

138926885737 is a deficient number, since it is larger than the sum of its proper divisors (622990743).

138926885737 is an equidigital number, since it uses as much as digits as its factorization.

138926885737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622990742.

The product of its digits is 121927680, while the sum is 67.

The spelling of 138926885737 in words is "one hundred thirty-eight billion, nine hundred twenty-six million, eight hundred eighty-five thousand, seven hundred thirty-seven".