165427357824 has 48 divisors (see below), whose sum is σ = 476034457470. Its totient is φ = 55142452224.

The previous prime is 165427357819. The next prime is 165427357853. The reversal of 165427357824 is 428753724561.

165427357824 is a `hidden beast` number, since 1 + 6 + 5 + 42 + 7 + 3 + 578 + 24 = 666.

It can be written as a sum of positive squares in only one way, i.e., 88494350400 + 76933007424 = 297480^2 + 277368^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71798917 + ... + 71801220.

Almost surely, 2^165427357824 is an apocalyptic number.

It is an amenable number.

165427357824 is an abundant number, since it is smaller than the sum of its proper divisors (310607099646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165427357824 is a wasteful number, since it uses less digits than its factorization.

165427357824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143600157 (or 143600142 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The spelling of 165427357824 in words is "one hundred sixty-five billion, four hundred twenty-seven million, three hundred fifty-seven thousand, eight hundred twenty-four".