165230305604440 has 32 divisors (see below), whose sum is σ = 373694447666880. Its totient is φ = 65749676009472.

The previous prime is 165230305604437. The next prime is 165230305604453. The reversal of 165230305604440 is 44406503032561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10701436944 + ... + 10701452383.

It is an arithmetic number, because the mean of its divisors is an integer number (11677951489590).

Almost surely, 2^{165230305604440} is an apocalyptic number.

165230305604440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165230305604440 is an abundant number, since it is smaller than the sum of its proper divisors (208464142062440).

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

165230305604440 is a wasteful number, since it uses less digits than its factorization.

165230305604440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21402889531 (or 21402889527 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 165230305604440 in words is "one hundred sixty-five trillion, two hundred thirty billion, three hundred five million, six hundred four thousand, four hundred forty".