816290338772 has 24 divisors (see below), whose sum is σ = 1480758881280. Its totient is φ = 393326549280.

The previous prime is 816290338769. The next prime is 816290338859. The reversal of 816290338772 is 277833092618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13742303 + ... + 13801574.

It is an arithmetic number, because the mean of its divisors is an integer number (61698286720).

Almost surely, 2^816290338772 is an apocalyptic number.

It is an amenable number.

816290338772 is a deficient number, since it is larger than the sum of its proper divisors (664468542508).

816290338772 is a wasteful number, since it uses less digits than its factorization.

816290338772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27544151 (or 27544149 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 816290338772 in words is "eight hundred sixteen billion, two hundred ninety million, three hundred thirty-eight thousand, seven hundred seventy-two".