12651477274 has 4 divisors (see below), whose sum is σ = 18977215914. Its totient is φ = 6325738636.

The previous prime is 12651477257. The next prime is 12651477281. The reversal of 12651477274 is 47277415621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47277415621 = 79 ⋅598448299.

It can be written as a sum of positive squares in only one way, i.e., 8407606249 + 4243871025 = 91693^2 + 65145^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162869317 + ... + 3162869320.

Almost surely, 2^12651477274 is an apocalyptic number.

12651477274 is a deficient number, since it is larger than the sum of its proper divisors (6325738640).

12651477274 is an equidigital number, since it uses as much as digits as its factorization.

12651477274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325738639.

The product of its digits is 658560, while the sum is 46.

The spelling of 12651477274 in words is "twelve billion, six hundred fifty-one million, four hundred seventy-seven thousand, two hundred seventy-four".