811322372970 has 48 divisors (see below), whose sum is σ = 2144019137832. Its totient is φ = 212805866880.

The previous prime is 811322372947. The next prime is 811322372989. The reversal of 811322372970 is 79273223118.

811322372970 is a `hidden beast` number, since 8 + 1 + 1 + 322 + 37 + 297 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 600660650529 + 210661722441 = 775023^2 + 458979^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 73885437 + ... + 73896416.

Almost surely, 2^811322372970 is an apocalyptic number.

811322372970 is an abundant number, since it is smaller than the sum of its proper divisors (1332696764862).

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

811322372970 is a wasteful number, since it uses less digits than its factorization.

811322372970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147781927 (or 147781924 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 811322372970 in words is "eight hundred eleven billion, three hundred twenty-two million, three hundred seventy-two thousand, nine hundred seventy".