139617454211 has 4 divisors (see below), whose sum is σ = 141983851800. Its totient is φ = 137251056624.

The previous prime is 139617454169. The next prime is 139617454241. The reversal of 139617454211 is 112454716931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139617454211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139617454241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183198706 + ... + 1183198823.

It is an arithmetic number, because the mean of its divisors is an integer number (35495962950).

Almost surely, 2^139617454211 is an apocalyptic number.

139617454211 is a deficient number, since it is larger than the sum of its proper divisors (2366397589).

139617454211 is an equidigital number, since it uses as much as digits as its factorization.

139617454211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366397588.

The product of its digits is 181440, while the sum is 44.

The spelling of 139617454211 in words is "one hundred thirty-nine billion, six hundred seventeen million, four hundred fifty-four thousand, two hundred eleven".