12812947534 has 4 divisors (see below), whose sum is σ = 19219421304. Its totient is φ = 6406473766.

The previous prime is 12812947457. The next prime is 12812947601. The reversal of 12812947534 is 43574921821.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203236882 + ... + 3203236885.

It is an arithmetic number, because the mean of its divisors is an integer number (4804855326).

Almost surely, 2^12812947534 is an apocalyptic number.

12812947534 is a deficient number, since it is larger than the sum of its proper divisors (6406473770).

12812947534 is an equidigital number, since it uses as much as digits as its factorization.

12812947534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406473769.

The product of its digits is 483840, while the sum is 46.

The spelling of 12812947534 in words is "twelve billion, eight hundred twelve million, nine hundred forty-seven thousand, five hundred thirty-four".