320515155023130 has 48 divisors (see below), whose sum is σ = 833445522229320. Its totient is φ = 85459823988864.

The previous prime is 320515155023069. The next prime is 320515155023131. The reversal of 320515155023130 is 31320551515023.

320515155023130 is a `hidden beast` number, since 3 + 2 + 0 + 5 + 1 + 5 + 15 + 502 + 3 + 130 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 77576266292121 + 242938888731009 = 8807739^2 + 15586497^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320515155023131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226039665 + ... + 227453204.

Almost surely, 2^{320515155023130} is an apocalyptic number.

320515155023130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320515155023130 is an abundant number, since it is smaller than the sum of its proper divisors (512930367206190).

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

320515155023130 is a wasteful number, since it uses less digits than its factorization.

320515155023130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453500735 (or 453500732 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The spelling of 320515155023130 in words is "three hundred twenty trillion, five hundred fifteen billion, one hundred fifty-five million, twenty-three thousand, one hundred thirty".