815440814732 has 12 divisors (see below), whose sum is σ = 1427218660560. Its totient is φ = 407664054576.

The previous prime is 815440814731. The next prime is 815440814737. The reversal of 815440814732 is 237418044518.

It is not an unprimeable number, because it can be changed into a prime (815440814731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14055632 + ... + 14113527.

It is an arithmetic number, because the mean of its divisors is an integer number (118934888380).

Almost surely, 2^815440814732 is an apocalyptic number.

It is an amenable number.

815440814732 is a deficient number, since it is larger than the sum of its proper divisors (611777845828).

815440814732 is a wasteful number, since it uses less digits than its factorization.

815440814732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28176400 (or 28176398 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 815440814732 in words is "eight hundred fifteen billion, four hundred forty million, eight hundred fourteen thousand, seven hundred thirty-two".