139880239761 has 4 divisors (see below), whose sum is σ = 186506986352. Its totient is φ = 93253493172.

The previous prime is 139880239757. The next prime is 139880239789. The reversal of 139880239761 is 167932088931.

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.

It is not a de Polignac number, because 139880239761 - 2² = 139880239757 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139880219761) 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, 23313373291 + ... + 23313373296.

It is an arithmetic number, because the mean of its divisors is an integer number (46626746588).

Almost surely, 2^139880239761 is an apocalyptic number.

It is an amenable number.

139880239761 is a deficient number, since it is larger than the sum of its proper divisors (46626746591).

139880239761 is an equidigital number, since it uses as much as digits as its factorization.

139880239761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46626746590.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 139880239761 in words is "one hundred thirty-nine billion, eight hundred eighty million, two hundred thirty-nine thousand, seven hundred sixty-one".