811898310916 has 81 divisors (see below), whose sum is σ = 1817016892551. Its totient is φ = 316269954000.

The previous prime is 811898310901. The next prime is 811898310943. The reversal of 811898310916 is 619013898118.

The square root of 811898310916 is 901054.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 138759391 + ... + 138765241.

Almost surely, 2^811898310916 is an apocalyptic number.

811898310916 is the 901054-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811898310916

811898310916 is an abundant number, since it is smaller than the sum of its proper divisors (1005118581635).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811898310916 is an equidigital number, since it uses as much as digits as its factorization.

811898310916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11742 (or 5871 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 55.

The spelling of 811898310916 in words is "eight hundred eleven billion, eight hundred ninety-eight million, three hundred ten thousand, nine hundred sixteen".