165560601665125 has 32 divisors (see below), whose sum is σ = 212194653765120. Its totient is φ = 128906235380800.

The previous prime is 165560601665119. The next prime is 165560601665131. The reversal of 165560601665125 is 521566106065561.

It is an interprime number because it is at equal distance from previous prime (165560601665119) and next prime (165560601665131).

It is not a de Polignac number, because 165560601665125 - 2⁴¹ = 163361578409573 is a prime.

It is a congruent 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, 77664934 + ... + 79768183.

It is an arithmetic number, because the mean of its divisors is an integer number (6631082930160).

Almost surely, 2^{165560601665125} is an apocalyptic number.

It is an amenable number.

165560601665125 is a deficient number, since it is larger than the sum of its proper divisors (46634052099995).

165560601665125 is a wasteful number, since it uses less digits than its factorization.

165560601665125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157433358 (or 157433348 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 55.

The spelling of 165560601665125 in words is "one hundred sixty-five trillion, five hundred sixty billion, six hundred one million, six hundred sixty-five thousand, one hundred twenty-five".