813371386485 has 32 divisors (see below), whose sum is σ = 1488308170752. Its totient is φ = 371576796480.

The previous prime is 813371386483. The next prime is 813371386489. The reversal of 813371386485 is 584683173318.

It is not a de Polignac number, because 813371386485 - 2¹ = 813371386483 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813371386483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2448571 + ... + 2760840.

It is an arithmetic number, because the mean of its divisors is an integer number (46509630336).

Almost surely, 2^813371386485 is an apocalyptic number.

It is an amenable number.

813371386485 is a deficient number, since it is larger than the sum of its proper divisors (674936784267).

813371386485 is a wasteful number, since it uses less digits than its factorization.

813371386485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210913.

The product of its digits is 11612160, while the sum is 57.

The spelling of 813371386485 in words is "eight hundred thirteen billion, three hundred seventy-one million, three hundred eighty-six thousand, four hundred eighty-five".