816822068690 has 32 divisors (see below), whose sum is σ = 1523754892800. Its totient is φ = 314929440000.

The previous prime is 816822068633. The next prime is 816822068719. The reversal of 816822068690 is 96860228618.

It is a super-2 number, since 2×816822068690² (a number of 25 digits) contains 22 as substring.

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, 5171015 + ... + 5326634.

It is an arithmetic number, because the mean of its divisors is an integer number (47617340400).

Almost surely, 2^816822068690 is an apocalyptic number.

816822068690 is a deficient number, since it is larger than the sum of its proper divisors (706932824110).

816822068690 is a wasteful number, since it uses less digits than its factorization.

816822068690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10497938.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 816822068690 in words is "eight hundred sixteen billion, eight hundred twenty-two million, sixty-eight thousand, six hundred ninety".