810457264516 has 9 divisors (see below), whose sum is σ = 1418303363799. Its totient is φ = 405227732004.

The previous prime is 810457264469. The next prime is 810457264517. The reversal of 810457264516 is 615462754018.

The square root of 810457264516 is 900254.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 810457264516.

It is not an unprimeable number, because it can be changed into a prime (810457264517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1575445 + ... + 2025571.

Almost surely, 2^810457264516 is an apocalyptic number.

810457264516 is the 900254-th square number.

It is an amenable number.

810457264516 is a deficient number, since it is larger than the sum of its proper divisors (607846099283).

810457264516 is an frugal number, since it uses more digits than its factorization.

810457264516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900258 (or 450129 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

Multiplying 810457264516 by its sum of digits (49), we get a square (39712405961284 = 6301778²).

The spelling of 810457264516 in words is "eight hundred ten billion, four hundred fifty-seven million, two hundred sixty-four thousand, five hundred sixteen".