139290638761 has 8 divisors (see below), whose sum is σ = 140975803584. Its totient is φ = 137605639920.

The previous prime is 139290638743. The next prime is 139290638827. The reversal of 139290638761 is 167836092931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139290638761 - 2¹⁷ = 139290507689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139290638701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2890315 + ... + 2938111.

It is an arithmetic number, because the mean of its divisors is an integer number (17621975448).

Almost surely, 2^139290638761 is an apocalyptic number.

It is an amenable number.

139290638761 is a deficient number, since it is larger than the sum of its proper divisors (1685164823).

139290638761 is an equidigital number, since it uses as much as digits as its factorization.

139290638761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82991.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 139290638761 in words is "one hundred thirty-nine billion, two hundred ninety million, six hundred thirty-eight thousand, seven hundred sixty-one".