816440012582 has 32 divisors (see below), whose sum is σ = 1326190773600. Its totient is φ = 375647528448.

The previous prime is 816440012551. The next prime is 816440012611. The reversal of 816440012582 is 285210044618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344144 + ... + 1323372.

It is an arithmetic number, because the mean of its divisors is an integer number (41443461675).

Almost surely, 2^816440012582 is an apocalyptic number.

816440012582 is a deficient number, since it is larger than the sum of its proper divisors (509750761018).

816440012582 is a wasteful number, since it uses less digits than its factorization.

816440012582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979880.

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 816440012582 in words is "eight hundred sixteen billion, four hundred forty million, twelve thousand, five hundred eighty-two".