165757083240 has 128 divisors (see below), whose sum is σ = 573937125120. Its totient is φ = 37512192000.

The previous prime is 165757083211. The next prime is 165757083257. The reversal of 165757083240 is 42380757561.

It is a self number, because there is not a number n which added to its sum of digits gives 165757083240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 892041 + ... + 1061720.

It is an arithmetic number, because the mean of its divisors is an integer number (4483883790).

Almost surely, 2^165757083240 is an apocalyptic number.

165757083240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165757083240 is an abundant number, since it is smaller than the sum of its proper divisors (408180041880).

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

165757083240 is a wasteful number, since it uses less digits than its factorization.

165757083240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953883 (or 1953879 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 165757083240 in words is "one hundred sixty-five billion, seven hundred fifty-seven million, eighty-three thousand, two hundred forty".