165616003223154 has 64 divisors (see below), whose sum is σ = 410830395655680. Its totient is φ = 49019535830160.

The previous prime is 165616003223131. The next prime is 165616003223161. The reversal of 165616003223154 is 451322300616561.

It is a happy number.

165616003223154 is a `hidden beast` number, since 1 + 6 + 5 + 6 + 1 + 6 + 0 + 0 + 322 + 315 + 4 = 666.

It is a super-2 number, since 2×165616003223154² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3242007252 + ... + 3242058335.

It is an arithmetic number, because the mean of its divisors is an integer number (6419224932120).

Almost surely, 2^{165616003223154} is an apocalyptic number.

165616003223154 is an abundant number, since it is smaller than the sum of its proper divisors (245214392432526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165616003223154 is a wasteful number, since it uses less digits than its factorization.

165616003223154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6484065652 (or 6484065646 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 165616003223154 in words is "one hundred sixty-five trillion, six hundred sixteen billion, three million, two hundred twenty-three thousand, one hundred fifty-four".