816838986752 has 22 divisors (see below), whose sum is σ = 1632880281228. Its totient is φ = 408419492864.

The previous prime is 816838986739. The next prime is 816838986787. The reversal of 816838986752 is 257689838618.

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 as a sum of consecutive naturals, namely, 398846138 + ... + 398848185.

Almost surely, 2^816838986752 is an apocalyptic number.

It is an amenable number.

816838986752 is a deficient number, since it is larger than the sum of its proper divisors (816041294476).

816838986752 is an equidigital number, since it uses as much as digits as its factorization.

816838986752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797694343 (or 797694325 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 71.

The spelling of 816838986752 in words is "eight hundred sixteen billion, eight hundred thirty-eight million, nine hundred eighty-six thousand, seven hundred fifty-two".