815193023460 has 24 divisors (see below), whose sum is σ = 2282540465856. Its totient is φ = 217384806240.

The previous prime is 815193023443. The next prime is 815193023467. The reversal of 815193023460 is 64320391518.

It is a super-2 number, since 2×815193023460² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (815193023467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6793275136 + ... + 6793275255.

It is an arithmetic number, because the mean of its divisors is an integer number (95105852744).

Almost surely, 2^815193023460 is an apocalyptic number.

It is an amenable number.

815193023460 is an abundant number, since it is smaller than the sum of its proper divisors (1467347442396).

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

815193023460 is a wasteful number, since it uses less digits than its factorization.

815193023460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13586550403 (or 13586550401 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 815193023460 in words is "eight hundred fifteen billion, one hundred ninety-three million, twenty-three thousand, four hundred sixty".