165146940840 has 64 divisors (see below), whose sum is σ = 566218085760. Its totient is φ = 37747872000.

The previous prime is 165146940809. The next prime is 165146940869. The reversal of 165146940840 is 48049641561.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 165146940840.

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, 98300911 + ... + 98302590.

It is an arithmetic number, because the mean of its divisors is an integer number (8847157590).

Almost surely, 2^165146940840 is an apocalyptic number.

165146940840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165146940840 is an abundant number, since it is smaller than the sum of its proper divisors (401071144920).

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

165146940840 is a wasteful number, since it uses less digits than its factorization.

165146940840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196603522 (or 196603518 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 165146940840 in words is "one hundred sixty-five billion, one hundred forty-six million, nine hundred forty thousand, eight hundred forty".