165073351705540 has 12 divisors (see below), whose sum is σ = 346654038581676. Its totient is φ = 66029340682208.

The previous prime is 165073351705529. The next prime is 165073351705631. The reversal of 165073351705540 is 45507153370561.

It can be written as a sum of positive squares in 2 ways, for example, as 55569391342144 + 109503960363396 = 7454488^2 + 10464414^2 .

It is a super-2 number, since 2×165073351705540² (a number of 29 digits) contains 22 as substring.

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, 4126833792619 + ... + 4126833792658.

It is an arithmetic number, because the mean of its divisors is an integer number (28887836548473).

Almost surely, 2^{165073351705540} is an apocalyptic number.

165073351705540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165073351705540 is an abundant number, since it is smaller than the sum of its proper divisors (181580686876136).

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

165073351705540 is a wasteful number, since it uses less digits than its factorization.

165073351705540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253667585286 (or 8253667585284 counting only the distinct ones).

The product of its (nonzero) digits is 6615000, while the sum is 52.

The spelling of 165073351705540 in words is "one hundred sixty-five trillion, seventy-three billion, three hundred fifty-one million, seven hundred five thousand, five hundred forty".