811393799076 has 189 divisors, whose sum is σ = 2477555702811. Its totient is φ = 231729516144.

The previous prime is 811393799023. The next prime is 811393799113. The reversal of 811393799076 is 670997393118.

The square root of 811393799076 is 900774.

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

811393799076 is a `hidden beast` number, since 81 + 1 + 39 + 379 + 90 + 76 = 666.

It is a tau number, because it is divible by the number of its divisors (189).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 340491381 + ... + 340493763.

Almost surely, 2^811393799076 is an apocalyptic number.

811393799076 is the 900774-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811393799076

811393799076 is an abundant number, since it is smaller than the sum of its proper divisors (1666161903735).

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

811393799076 is an frugal number, since it uses more digits than its factorization.

811393799076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802 (or 2395 counting only the distinct ones).

The product of its (nonzero) digits is 15431472, while the sum is 63.

The spelling of 811393799076 in words is "eight hundred eleven billion, three hundred ninety-three million, seven hundred ninety-nine thousand, seventy-six".