816504295530 has 96 divisors (see below), whose sum is σ = 2486778252480. Its totient is φ = 169663226880.

The previous prime is 816504295391. The next prime is 816504295547. The reversal of 816504295530 is 35592405618.

It is a self number, because there is not a number n which added to its sum of digits gives 816504295530.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25231335 + ... + 25263674.

It is an arithmetic number, because the mean of its divisors is an integer number (25903940130).

Almost surely, 2^816504295530 is an apocalyptic number.

816504295530 is an abundant number, since it is smaller than the sum of its proper divisors (1670273956950).

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

816504295530 is a wasteful number, since it uses less digits than its factorization.

816504295530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50495044 (or 50495037 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

The spelling of 816504295530 in words is "eight hundred sixteen billion, five hundred four million, two hundred ninety-five thousand, five hundred thirty".