816802570442 has 16 divisors (see below), whose sum is σ = 1297668081600. Its totient is φ = 384261114048.

The previous prime is 816802570427. The next prime is 816802570471. The reversal of 816802570442 is 244075208618.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3528878 + ... + 3753209.

It is an arithmetic number, because the mean of its divisors is an integer number (81104255100).

Almost surely, 2^816802570442 is an apocalyptic number.

816802570442 is a deficient number, since it is larger than the sum of its proper divisors (480865511158).

816802570442 is a wasteful number, since it uses less digits than its factorization.

816802570442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7285405.

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

The spelling of 816802570442 in words is "eight hundred sixteen billion, eight hundred two million, five hundred seventy thousand, four hundred forty-two".