180646212667 has 4 divisors (see below), whose sum is σ = 185052217896. Its totient is φ = 176240207440.

The previous prime is 180646212641. The next prime is 180646212679. The reversal of 180646212667 is 766212646081.

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

It is a cyclic number.

It is not a de Polignac number, because 180646212667 - 2¹⁵ = 180646179899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 180646212667.

It is not an unprimeable number, because it can be changed into a prime (180646212697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203002553 + ... + 2203002634.

It is an arithmetic number, because the mean of its divisors is an integer number (46263054474).

Almost surely, 2^180646212667 is an apocalyptic number.

180646212667 is a deficient number, since it is larger than the sum of its proper divisors (4406005229).

180646212667 is an equidigital number, since it uses as much as digits as its factorization.

180646212667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406005228.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 180646212667 in words is "one hundred eighty billion, six hundred forty-six million, two hundred twelve thousand, six hundred sixty-seven".