139171966671 has 16 divisors (see below), whose sum is σ = 187503008000. Its totient is φ = 91811397888.

The previous prime is 139171966667. The next prime is 139171966699. The reversal of 139171966671 is 176669171931.

It is not a de Polignac number, because 139171966671 - 2² = 139171966667 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 (139171966601) 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, 2209350 + ... + 2271468.

It is an arithmetic number, because the mean of its divisors is an integer number (11718938000).

Almost surely, 2^139171966671 is an apocalyptic number.

139171966671 is a deficient number, since it is larger than the sum of its proper divisors (48331041329).

139171966671 is an equidigital number, since it uses as much as digits as its factorization.

139171966671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69918.

The product of its digits is 2571912, while the sum is 57.

The spelling of 139171966671 in words is "one hundred thirty-nine billion, one hundred seventy-one million, nine hundred sixty-six thousand, six hundred seventy-one".