813544627473 has 40 divisors (see below), whose sum is σ = 1248327704448. Its totient is φ = 527754674016.

The previous prime is 813544627447. The next prime is 813544627477. The reversal of 813544627473 is 374726445318.

813544627473 is a `hidden beast` number, since 8 + 1 + 3 + 5 + 4 + 4 + 627 + 4 + 7 + 3 = 666.

It is not a de Polignac number, because 813544627473 - 2³⁰ = 812470885649 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (813544627477) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40990 + ... + 1276232.

Almost surely, 2^813544627473 is an apocalyptic number.

It is an amenable number.

813544627473 is a deficient number, since it is larger than the sum of its proper divisors (434783076975).

813544627473 is a wasteful number, since it uses less digits than its factorization.

813544627473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235475 (or 1235466 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 54.

The spelling of 813544627473 in words is "eight hundred thirteen billion, five hundred forty-four million, six hundred twenty-seven thousand, four hundred seventy-three".