813477396479 has 4 divisors (see below), whose sum is σ = 887429887080. Its totient is φ = 739524905880.

The previous prime is 813477396461. The next prime is 813477396481. The reversal of 813477396479 is 974693774318.

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 813477396479 - 2³² = 809182429183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813477396679) 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, 36976245284 + ... + 36976245305.

It is an arithmetic number, because the mean of its divisors is an integer number (221857471770).

Almost surely, 2^813477396479 is an apocalyptic number.

813477396479 is a deficient number, since it is larger than the sum of its proper divisors (73952490601).

813477396479 is a wasteful number, since it uses less digits than its factorization.

813477396479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73952490600.

The product of its digits is 192036096, while the sum is 68.

The spelling of 813477396479 in words is "eight hundred thirteen billion, four hundred seventy-seven million, three hundred ninety-six thousand, four hundred seventy-nine".