165445533857007 has 36 divisors (see below), whose sum is σ = 241754203462824. Its totient is φ = 109029746305920.

The previous prime is 165445533856973. The next prime is 165445533857017. The reversal of 165445533857007 is 700758335544561.

165445533857007 is a `hidden beast` number, since 1 + 6 + 5 + 4 + 4 + 5 + 53 + 3 + 8 + 570 + 0 + 7 = 666.

It is not a de Polignac number, because 165445533857007 - 2²⁰ = 165445532808431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165445533857017) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 279370957 + ... + 279962537.

It is an arithmetic number, because the mean of its divisors is an integer number (6715394540634).

Almost surely, 2^{165445533857007} is an apocalyptic number.

165445533857007 is a deficient number, since it is larger than the sum of its proper divisors (76308669605817).

165445533857007 is an equidigital number, since it uses as much as digits as its factorization.

165445533857007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595688 (or 595596 counting only the distinct ones).

The product of its (nonzero) digits is 211680000, while the sum is 63.

The spelling of 165445533857007 in words is "one hundred sixty-five trillion, four hundred forty-five billion, five hundred thirty-three million, eight hundred fifty-seven thousand, seven".