813145077075 has 24 divisors (see below), whose sum is σ = 1380734996848. Its totient is φ = 421956362880.

The previous prime is 813145077049. The next prime is 813145077167. The reversal of 813145077075 is 570770541318.

It is not a de Polignac number, because 813145077075 - 2⁹ = 813145076563 is a prime.

It is a super-2 number, since 2×813145077075² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146509852 + ... + 146515401.

Almost surely, 2^813145077075 is an apocalyptic number.

813145077075 is a deficient number, since it is larger than the sum of its proper divisors (567589919773).

813145077075 is a wasteful number, since it uses less digits than its factorization.

813145077075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293025303 (or 293025298 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 48.

The spelling of 813145077075 in words is "eight hundred thirteen billion, one hundred forty-five million, seventy-seven thousand, seventy-five".