165015516115011 has 4 divisors (see below), whose sum is σ = 220020688153352. Its totient is φ = 110010344076672.

The previous prime is 165015516114983. The next prime is 165015516115091. The reversal of 165015516115011 is 110511615510561.

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

It is not a de Polignac number, because 165015516115011 - 2¹⁵ = 165015516082243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165015516115091) 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, 27502586019166 + ... + 27502586019171.

It is an arithmetic number, because the mean of its divisors is an integer number (55005172038338).

Almost surely, 2^{165015516115011} is an apocalyptic number.

165015516115011 is a deficient number, since it is larger than the sum of its proper divisors (55005172038341).

165015516115011 is an equidigital number, since it uses as much as digits as its factorization.

165015516115011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55005172038340.

The product of its (nonzero) digits is 22500, while the sum is 39.

The spelling of 165015516115011 in words is "one hundred sixty-five trillion, fifteen billion, five hundred sixteen million, one hundred fifteen thousand, eleven".