12632646478 has 8 divisors (see below), whose sum is σ = 18953853840. Its totient is φ = 6314695200.

The previous prime is 12632646461. The next prime is 12632646491. The reversal of 12632646478 is 87464623621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804298 + ... + 819853.

It is an arithmetic number, because the mean of its divisors is an integer number (2369231730).

Almost surely, 2^12632646478 is an apocalyptic number.

12632646478 is a deficient number, since it is larger than the sum of its proper divisors (6321207362).

12632646478 is a wasteful number, since it uses less digits than its factorization.

12632646478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628042.

The product of its digits is 2322432, while the sum is 49.

The spelling of 12632646478 in words is "twelve billion, six hundred thirty-two million, six hundred forty-six thousand, four hundred seventy-eight".