12814531586 has 4 divisors (see below), whose sum is σ = 19221797382. Its totient is φ = 6407265792.

The previous prime is 12814531559. The next prime is 12814531649. The reversal of 12814531586 is 68513541821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68513541821 = 239 ⋅286667539.

It can be written as a sum of positive squares in only one way, i.e., 8099100025 + 4715431561 = 89995^2 + 68669^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203632895 + ... + 3203632898.

Almost surely, 2^12814531586 is an apocalyptic number.

12814531586 is a deficient number, since it is larger than the sum of its proper divisors (6407265796).

12814531586 is an equidigital number, since it uses as much as digits as its factorization.

12814531586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6407265795.

The product of its digits is 230400, while the sum is 44.

The spelling of 12814531586 in words is "twelve billion, eight hundred fourteen million, five hundred thirty-one thousand, five hundred eighty-six".