165215612051151 has 4 divisors (see below), whose sum is σ = 220287482734872. Its totient is φ = 110143741367432.

The previous prime is 165215612051117. The next prime is 165215612051159. The reversal of 165215612051151 is 151150216512561.

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 165215612051151 - 2²⁵ = 165215578496719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165215612051159) 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, 27535935341856 + ... + 27535935341861.

It is an arithmetic number, because the mean of its divisors is an integer number (55071870683718).

Almost surely, 2^{165215612051151} is an apocalyptic number.

165215612051151 is a deficient number, since it is larger than the sum of its proper divisors (55071870683721).

165215612051151 is an equidigital number, since it uses as much as digits as its factorization.

165215612051151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55071870683720.

The product of its (nonzero) digits is 90000, while the sum is 42.

The spelling of 165215612051151 in words is "one hundred sixty-five trillion, two hundred fifteen billion, six hundred twelve million, fifty-one thousand, one hundred fifty-one".