139171737639 has 16 divisors (see below), whose sum is σ = 203562529920. Its totient is φ = 83875294560.

The previous prime is 139171737619. The next prime is 139171737641. The reversal of 139171737639 is 936737171931.

It is not a de Polignac number, because 139171737639 - 2⁷ = 139171737511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139171737619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11774332 + ... + 11786145.

It is an arithmetic number, because the mean of its divisors is an integer number (12722658120).

Almost surely, 2^139171737639 is an apocalyptic number.

139171737639 is a deficient number, since it is larger than the sum of its proper divisors (64390792281).

139171737639 is a wasteful number, since it uses less digits than its factorization.

139171737639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23560670.

The product of its digits is 4500846, while the sum is 57.

The spelling of 139171737639 in words is "one hundred thirty-nine billion, one hundred seventy-one million, seven hundred thirty-seven thousand, six hundred thirty-nine".