165515656016 has 10 divisors (see below), whose sum is σ = 320686583562. Its totient is φ = 82757828000.

The previous prime is 165515655973. The next prime is 165515656043. The reversal of 165515656016 is 610656515561.

165515656016 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 132863166016 + 32652490000 = 364504^2 + 180700^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5172364235 + ... + 5172364266.

Almost surely, 2^165515656016 is an apocalyptic number.

165515656016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165515656016 is a deficient number, since it is larger than the sum of its proper divisors (155170927546).

165515656016 is a wasteful number, since it uses less digits than its factorization.

165515656016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10344728509 (or 10344728503 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 165515656016 in words is "one hundred sixty-five billion, five hundred fifteen million, six hundred fifty-six thousand, sixteen".