12505818334 has 4 divisors (see below), whose sum is σ = 18758727504. Its totient is φ = 6252909166.

The previous prime is 12505818329. The next prime is 12505818343. The reversal of 12505818334 is 43381850521.

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, 3126454582 + ... + 3126454585.

It is an arithmetic number, because the mean of its divisors is an integer number (4689681876).

Almost surely, 2^12505818334 is an apocalyptic number.

12505818334 is a deficient number, since it is larger than the sum of its proper divisors (6252909170).

12505818334 is an equidigital number, since it uses as much as digits as its factorization.

12505818334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252909169.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 12505818334 in words is "twelve billion, five hundred five million, eight hundred eighteen thousand, three hundred thirty-four".