816337945802 has 24 divisors (see below), whose sum is σ = 1271382774636. Its totient is φ = 393101178624.

The previous prime is 816337945799. The next prime is 816337945847. The reversal of 816337945802 is 208549733618.

It can be written as a sum of positive squares in 6 ways, for example, as 413951978881 + 402385966921 = 643391^2 + 634339^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56498 + ... + 1279010.

It is a 2-persistent number, because it is pandigital, and so is 2⋅816337945802 = 1632675891604, but 3⋅816337945802 = 2449013837406 is not.

Almost surely, 2^816337945802 is an apocalyptic number.

816337945802 is a deficient number, since it is larger than the sum of its proper divisors (455044828834).

816337945802 is a wasteful number, since it uses less digits than its factorization.

816337945802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222970 (or 1222941 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 816337945802 in words is "eight hundred sixteen billion, three hundred thirty-seven million, nine hundred forty-five thousand, eight hundred two".