138088074002591 has 4 divisors (see below), whose sum is σ = 139455282656184. Its totient is φ = 136720865349000.

The previous prime is 138088074002537. The next prime is 138088074002647. The reversal of 138088074002591 is 195200470880831.

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 138088074002591 - 2³⁰ = 138087000260767 is a prime.

It is a super-3 number, since 3×138088074002591³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138088074002521) 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, 683604326645 + ... + 683604326846.

It is an arithmetic number, because the mean of its divisors is an integer number (34863820664046).

Almost surely, 2^{138088074002591} is an apocalyptic number.

138088074002591 is a deficient number, since it is larger than the sum of its proper divisors (1367208653593).

138088074002591 is a wasteful number, since it uses less digits than its factorization.

138088074002591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367208653592.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 138088074002591 in words is "one hundred thirty-eight trillion, eighty-eight billion, seventy-four million, two thousand, five hundred ninety-one".