806513974992 has 90 divisors (see below), whose sum is σ = 2480965534866. Its totient is φ = 244398168960.

The previous prime is 806513974933. The next prime is 806513974997. The reversal of 806513974992 is 299479315608.

806513974992 is a `hidden beast` number, since 8 + 0 + 6 + 5 + 139 + 7 + 499 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 806396816016 + 117158976 = 897996^2 + 10824^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806513974997) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23126343 + ... + 23161190.

It is a 1-persistent number, because it is pandigital, but 2⋅806513974992 = 1613027949984 is not.

Almost surely, 2^806513974992 is an apocalyptic number.

It is an amenable number.

806513974992 is an abundant number, since it is smaller than the sum of its proper divisors (1674451559874).

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

806513974992 is a wasteful number, since it uses less digits than its factorization.

806513974992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46287569 (or 46287549 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 806513974992 in words is "eight hundred six billion, five hundred thirteen million, nine hundred seventy-four thousand, nine hundred ninety-two".