165765750090016 has 24 divisors (see below), whose sum is σ = 326386484453484. Its totient is φ = 82873944514560.

The previous prime is 165765750090007. The next prime is 165765750090067. The reversal of 165765750090016 is 610090057567561.

It can be written as a sum of positive squares in 2 ways, for example, as 165765728000016 + 22090000 = 12875004^2 + 4700^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278777445 + ... + 279371428.

Almost surely, 2^{165765750090016} is an apocalyptic number.

165765750090016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165765750090016 is a deficient number, since it is larger than the sum of its proper divisors (160620734363468).

165765750090016 is an equidigital number, since it uses as much as digits as its factorization.

165765750090016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558158164 (or 558158156 counting only the distinct ones).

The product of its (nonzero) digits is 11907000, while the sum is 58.

The spelling of 165765750090016 in words is "one hundred sixty-five trillion, seven hundred sixty-five billion, seven hundred fifty million, ninety thousand, sixteen".