812752157497 has 32 divisors (see below), whose sum is σ = 993525080832. Its totient is φ = 648996655104.

The previous prime is 812752157491. The next prime is 812752157501. The reversal of 812752157497 is 794751257218.

It is a happy number.

It is not a de Polignac number, because 812752157497 - 2³ = 812752157489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812752157491) 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, 10139458 + ... + 10219300.

It is an arithmetic number, because the mean of its divisors is an integer number (31047658776).

Almost surely, 2^812752157497 is an apocalyptic number.

It is an amenable number.

812752157497 is a deficient number, since it is larger than the sum of its proper divisors (180772923335).

812752157497 is a wasteful number, since it uses less digits than its factorization.

812752157497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80737.

The product of its digits is 9878400, while the sum is 58.

The spelling of 812752157497 in words is "eight hundred twelve billion, seven hundred fifty-two million, one hundred fifty-seven thousand, four hundred ninety-seven".