815740072104 has 32 divisors (see below), whose sum is σ = 2039395209120. Its totient is φ = 271907353536.

The previous prime is 815740072097. The next prime is 815740072141. The reversal of 815740072104 is 401270047518.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810879 + ... + 1512945.

It is an arithmetic number, because the mean of its divisors is an integer number (63731100285).

Almost surely, 2^815740072104 is an apocalyptic number.

It is an amenable number.

815740072104 is an abundant number, since it is smaller than the sum of its proper divisors (1223655137016).

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

815740072104 is a wasteful number, since it uses less digits than its factorization.

815740072104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750489 (or 750485 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The spelling of 815740072104 in words is "eight hundred fifteen billion, seven hundred forty million, seventy-two thousand, one hundred four".