165452760212251 has 16 divisors (see below), whose sum is σ = 176208883329024. Its totient is φ = 154810483446784.

The previous prime is 165452760212237. The next prime is 165452760212279. The reversal of 165452760212251 is 152212067254561.

It is a cyclic number.

It is not a de Polignac number, because 165452760212251 - 2²³ = 165452751823643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165452760212195 and 165452760212204.

It is not an unprimeable number, because it can be changed into a prime (165452760216251) 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, 45685311 + ... + 49173703.

It is an arithmetic number, because the mean of its divisors is an integer number (11013055208064).

Almost surely, 2^{165452760212251} is an apocalyptic number.

165452760212251 is a deficient number, since it is larger than the sum of its proper divisors (10756123116773).

165452760212251 is a wasteful number, since it uses less digits than its factorization.

165452760212251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504710.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 165452760212251 in words is "one hundred sixty-five trillion, four hundred fifty-two billion, seven hundred sixty million, two hundred twelve thousand, two hundred fifty-one".