180972656139 has 16 divisors (see below), whose sum is σ = 263300966784. Its totient is φ = 109652059200.

The previous prime is 180972656099. The next prime is 180972656147. The reversal of 180972656139 is 931656279081.

It is not a de Polignac number, because 180972656139 - 2⁸ = 180972655883 is a prime.

It is a super-2 number, since 2×180972656139² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (180972656639) 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, 578449 + ... + 834594.

It is an arithmetic number, because the mean of its divisors is an integer number (16456310424).

Almost surely, 2^180972656139 is an apocalyptic number.

180972656139 is a deficient number, since it is larger than the sum of its proper divisors (82328310645).

180972656139 is a wasteful number, since it uses less digits than its factorization.

180972656139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416938.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 180972656139 in words is "one hundred eighty billion, nine hundred seventy-two million, six hundred fifty-six thousand, one hundred thirty-nine".