813267332649 has 12 divisors (see below), whose sum is σ = 1176535129536. Its totient is φ = 541340229912.

The previous prime is 813267332627. The next prime is 813267332663. The reversal of 813267332649 is 946233762318.

813267332649 is a `hidden beast` number, since 8 + 1 + 3 + 267 + 332 + 6 + 49 = 666.

813267332649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 813267332649 - 2⁵ = 813267332617 is a prime.

It is a super-2 number, since 2×813267332649² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813267332595 and 813267332604.

It is not an unprimeable number, because it can be changed into a prime (813266332649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69826509 + ... + 69838154.

It is an arithmetic number, because the mean of its divisors is an integer number (98044594128).

Almost surely, 2^813267332649 is an apocalyptic number.

It is an amenable number.

813267332649 is a deficient number, since it is larger than the sum of its proper divisors (363267796887).

813267332649 is a wasteful number, since it uses less digits than its factorization.

813267332649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139665316 (or 139665313 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The spelling of 813267332649 in words is "eight hundred thirteen billion, two hundred sixty-seven million, three hundred thirty-two thousand, six hundred forty-nine".