165450316651 has 2 divisors, whose sum is σ = 165450316652. Its totient is φ = 165450316650.

The previous prime is 165450316627. The next prime is 165450316679. The reversal of 165450316651 is 156613054561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165450316651 - 2⁹ = 165450316139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165450316598 and 165450316607.

It is not a weakly prime, because it can be changed into another prime (165450316051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82725158325 + 82725158326.

It is an arithmetic number, because the mean of its divisors is an integer number (82725158326).

Almost surely, 2^165450316651 is an apocalyptic number.

165450316651 is a deficient number, since it is larger than the sum of its proper divisors (1).

165450316651 is an equidigital number, since it uses as much as digits as its factorization.

165450316651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 165450316651 in words is "one hundred sixty-five billion, four hundred fifty million, three hundred sixteen thousand, six hundred fifty-one".