138880589277 has 4 divisors (see below), whose sum is σ = 185174119040. Its totient is φ = 92587059516.

The previous prime is 138880589257. The next prime is 138880589347. The reversal of 138880589277 is 772985088831.

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: 772985088831 = 3 ⋅257661696277.

It is not a de Polignac number, because 138880589277 - 2²³ = 138872200669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138880589207) 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, 23146764877 + ... + 23146764882.

It is an arithmetic number, because the mean of its divisors is an integer number (46293529760).

Almost surely, 2^138880589277 is an apocalyptic number.

It is an amenable number.

138880589277 is a deficient number, since it is larger than the sum of its proper divisors (46293529763).

138880589277 is an equidigital number, since it uses as much as digits as its factorization.

138880589277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46293529762.

The product of its (nonzero) digits is 54190080, while the sum is 66.

The spelling of 138880589277 in words is "one hundred thirty-eight billion, eight hundred eighty million, five hundred eighty-nine thousand, two hundred seventy-seven".