138901587527 has 4 divisors (see below), whose sum is σ = 139138217736. Its totient is φ = 138664957320.

The previous prime is 138901587521. The next prime is 138901587547. The reversal of 138901587527 is 725785109831.

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

It is a cyclic number.

It is not a de Polignac number, because 138901587527 - 2⁸ = 138901587271 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 (138901587521) 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, 118314224 + ... + 118315397.

It is an arithmetic number, because the mean of its divisors is an integer number (34784554434).

Almost surely, 2^138901587527 is an apocalyptic number.

138901587527 is a deficient number, since it is larger than the sum of its proper divisors (236630209).

138901587527 is an equidigital number, since it uses as much as digits as its factorization.

138901587527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236630208.

The product of its (nonzero) digits is 4233600, while the sum is 56.

The spelling of 138901587527 in words is "one hundred thirty-eight billion, nine hundred one million, five hundred eighty-seven thousand, five hundred twenty-seven".