165201601151889 has 24 divisors (see below), whose sum is σ = 240202137094920. Its totient is φ = 109408460009472.

The previous prime is 165201601151869. The next prime is 165201601151981. The reversal of 165201601151889 is 988151106102561.

165201601151889 is a `hidden beast` number, since 1 + 6 + 5 + 2 + 0 + 1 + 601 + 15 + 18 + 8 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 897913541889 + 164303687610000 = 947583^2 + 12818100^2 .

It is not a de Polignac number, because 165201601151889 - 2²⁹ = 165201064280977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165201601151809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90061944 + ... + 91877945.

It is an arithmetic number, because the mean of its divisors is an integer number (10008422378955).

Almost surely, 2^{165201601151889} is an apocalyptic number.

It is an amenable number.

165201601151889 is a deficient number, since it is larger than the sum of its proper divisors (75000535943031).

165201601151889 is a wasteful number, since it uses less digits than its factorization.

165201601151889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181940561 (or 181940558 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 54.

The spelling of 165201601151889 in words is "one hundred sixty-five trillion, two hundred one billion, six hundred one million, one hundred fifty-one thousand, eight hundred eighty-nine".