810325969920 has 220 divisors, whose sum is σ = 2903751609264. Its totient is φ = 216086814720.

The previous prime is 810325969909. The next prime is 810325969933. The reversal of 810325969920 is 29969523018.

It is a happy number.

810325969920 is a `hidden beast` number, since 8 + 10 + 32 + 596 + 9 + 9 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 562236 + ... + 1391675.

Almost surely, 2^810325969920 is an apocalyptic number.

810325969920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

810325969920 is an abundant number, since it is smaller than the sum of its proper divisors (2093425639344).

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

810325969920 is a wasteful number, since it uses less digits than its factorization.

810325969920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953948 (or 1953921 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The spelling of 810325969920 in words is "eight hundred ten billion, three hundred twenty-five million, nine hundred sixty-nine thousand, nine hundred twenty".