813672646411 has 4 divisors (see below), whose sum is σ = 813677484024. Its totient is φ = 813667808800.

The previous prime is 813672646387. The next prime is 813672646439. The reversal of 813672646411 is 114646276318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 813672646411 - 2¹⁷ = 813672515339 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813672646211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2157070 + ... + 2506051.

It is an arithmetic number, because the mean of its divisors is an integer number (203419371006).

Almost surely, 2^813672646411 is an apocalyptic number.

813672646411 is a deficient number, since it is larger than the sum of its proper divisors (4837613).

813672646411 is a wasteful number, since it uses less digits than its factorization.

813672646411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837612.

The product of its digits is 1161216, while the sum is 49.

The spelling of 813672646411 in words is "eight hundred thirteen billion, six hundred seventy-two million, six hundred forty-six thousand, four hundred eleven".