165893290540 has 48 divisors (see below), whose sum is σ = 354149770464. Its totient is φ = 65257920000.

The previous prime is 165893290531. The next prime is 165893290571. The reversal of 165893290540 is 45092398561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10973667 + ... + 10988773.

It is an arithmetic number, because the mean of its divisors is an integer number (7378120218).

Almost surely, 2^165893290540 is an apocalyptic number.

165893290540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165893290540 is an abundant number, since it is smaller than the sum of its proper divisors (188256479924).

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

165893290540 is a wasteful number, since it uses less digits than its factorization.

165893290540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24178 (or 24176 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 165893290540 in words is "one hundred sixty-five billion, eight hundred ninety-three million, two hundred ninety thousand, five hundred forty".