165111661016 has 32 divisors (see below), whose sum is σ = 328282457040. Its totient is φ = 77584109568.

The previous prime is 165111661007. The next prime is 165111661019. The reversal of 165111661016 is 610166111561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165111661019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810446 + ... + 993501.

Almost surely, 2^165111661016 is an apocalyptic number.

It is an amenable number.

165111661016 is a deficient number, since it is larger than the sum of its proper divisors (163170796024).

165111661016 is a wasteful number, since it uses less digits than its factorization.

165111661016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804643 (or 1804639 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

Adding to 165111661016 its reverse (610166111561), we get a palindrome (775277772577).

The spelling of 165111661016 in words is "one hundred sixty-five billion, one hundred eleven million, six hundred sixty-one thousand, sixteen".