180972656099 has 2 divisors, whose sum is σ = 180972656100. Its totient is φ = 180972656098.

The previous prime is 180972656083. The next prime is 180972656147. The reversal of 180972656099 is 990656279081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 180972656099 - 2⁴ = 180972656083 is a prime.

It is a super-2 number, since 2×180972656099² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (180972656699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90486328049 + 90486328050.

It is an arithmetic number, because the mean of its divisors is an integer number (90486328050).

Almost surely, 2^180972656099 is an apocalyptic number.

180972656099 is a deficient number, since it is larger than the sum of its proper divisors (1).

180972656099 is an equidigital number, since it uses as much as digits as its factorization.

180972656099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 62.

It can be divided in two parts, 180 and 972656099, that added together give a palindrome (972656279).

The spelling of 180972656099 in words is "one hundred eighty billion, nine hundred seventy-two million, six hundred fifty-six thousand, ninety-nine".