139626544231 has 4 divisors (see below), whose sum is σ = 139630613472. Its totient is φ = 139622474992.

The previous prime is 139626544103. The next prime is 139626544259. The reversal of 139626544231 is 132445626931.

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 139626544231 - 2⁷ = 139626544103 is a prime.

It is a super-2 number, since 2×139626544231² (a number of 23 digits) contains 22 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 (139626514231) 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, 1982710 + ... + 2051923.

It is an arithmetic number, because the mean of its divisors is an integer number (34907653368).

Almost surely, 2^139626544231 is an apocalyptic number.

139626544231 is a deficient number, since it is larger than the sum of its proper divisors (4069241).

139626544231 is an equidigital number, since it uses as much as digits as its factorization.

139626544231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069240.

The product of its digits is 933120, while the sum is 46.

The spelling of 139626544231 in words is "one hundred thirty-nine billion, six hundred twenty-six million, five hundred forty-four thousand, two hundred thirty-one".