180647587121 has 2 divisors, whose sum is σ = 180647587122. Its totient is φ = 180647587120.

The previous prime is 180647587097. The next prime is 180647587129. The reversal of 180647587121 is 121785746081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169055834896 + 11591752225 = 411164^2 + 107665^2 .

It is an emirp because it is prime and its reverse (121785746081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180647587121 - 2²² = 180643392817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180647587121.

It is not a weakly prime, because it can be changed into another prime (180647587129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90323793560 + 90323793561.

It is an arithmetic number, because the mean of its divisors is an integer number (90323793561).

Almost surely, 2^180647587121 is an apocalyptic number.

It is an amenable number.

180647587121 is a deficient number, since it is larger than the sum of its proper divisors (1).

180647587121 is an equidigital number, since it uses as much as digits as its factorization.

180647587121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 752640, while the sum is 50.

The spelling of 180647587121 in words is "one hundred eighty billion, six hundred forty-seven million, five hundred eighty-seven thousand, one hundred twenty-one".