812487315497 has 16 divisors (see below), whose sum is σ = 972540571968. Its totient is φ = 668943238080.

The previous prime is 812487315487. The next prime is 812487315547. The reversal of 812487315497 is 794513784218.

It is a happy number.

It is not a de Polignac number, because 812487315497 - 2⁴ = 812487315481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812487315457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53593643 + ... + 53608800.

It is an arithmetic number, because the mean of its divisors is an integer number (60783785748).

Almost surely, 2^812487315497 is an apocalyptic number.

It is an amenable number.

812487315497 is a deficient number, since it is larger than the sum of its proper divisors (160053256471).

812487315497 is a wasteful number, since it uses less digits than its factorization.

812487315497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107202520.

The product of its digits is 13547520, while the sum is 59.

The spelling of 812487315497 in words is "eight hundred twelve billion, four hundred eighty-seven million, three hundred fifteen thousand, four hundred ninety-seven".