12514643698 has 4 divisors (see below), whose sum is σ = 18771965550. Its totient is φ = 6257321848.

The previous prime is 12514643693. The next prime is 12514643699. The reversal of 12514643698 is 89634641521.

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

It can be written as a sum of positive squares in only one way, i.e., 8180659809 + 4333983889 = 90447^2 + 65833^2 .

It is a super-2 number, since 2×12514643698² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12514643693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3128660923 + ... + 3128660926.

Almost surely, 2^12514643698 is an apocalyptic number.

12514643698 is a deficient number, since it is larger than the sum of its proper divisors (6257321852).

12514643698 is an equidigital number, since it uses as much as digits as its factorization.

12514643698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6257321851.

The product of its digits is 1244160, while the sum is 49.

The spelling of 12514643698 in words is "twelve billion, five hundred fourteen million, six hundred forty-three thousand, six hundred ninety-eight".