165107511442 has 24 divisors (see below), whose sum is σ = 261806425020. Its totient is φ = 78077176320.

The previous prime is 165107511433. The next prime is 165107511449. The reversal of 165107511442 is 244115701561.

It can be written as a sum of positive squares in 2 ways, for example, as 124855515801 + 40251995641 = 353349^2 + 200629^2 .

It is not an unprimeable number, because it can be changed into a prime (165107511449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782559 + ... + 970882.

Almost surely, 2^165107511442 is an apocalyptic number.

165107511442 is a deficient number, since it is larger than the sum of its proper divisors (96698913578).

165107511442 is a wasteful number, since it uses less digits than its factorization.

165107511442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753578 (or 1753555 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 165107511442 in words is "one hundred sixty-five billion, one hundred seven million, five hundred eleven thousand, four hundred forty-two".