165407371013072 has 40 divisors (see below), whose sum is σ = 323474595425856. Its totient is φ = 81930068988416.

The previous prime is 165407371013033. The next prime is 165407371013077. The reversal of 165407371013072 is 270310173704561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165407371013077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249677693 + ... + 250339299.

Almost surely, 2^{165407371013072} is an apocalyptic number.

It is an amenable number.

165407371013072 is a deficient number, since it is larger than the sum of its proper divisors (158067224412784).

165407371013072 is a wasteful number, since it uses less digits than its factorization.

165407371013072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807755 (or 807749 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 165407371013072 in words is "one hundred sixty-five trillion, four hundred seven billion, three hundred seventy-one million, thirteen thousand, seventy-two".