12646478310 has 32 divisors (see below), whose sum is σ = 30865985280. Its totient is φ = 3315234528.

The previous prime is 12646478293. The next prime is 12646478399. The reversal of 12646478310 is 1387464621.

It is a super-2 number, since 2×12646478310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3570682 + ... + 3574221.

It is an arithmetic number, because the mean of its divisors is an integer number (964562040).

Almost surely, 2^12646478310 is an apocalyptic number.

12646478310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12646478310 is an abundant number, since it is smaller than the sum of its proper divisors (18219506970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12646478310 is a wasteful number, since it uses less digits than its factorization.

12646478310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144972.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 12646478310 in words is "twelve billion, six hundred forty-six million, four hundred seventy-eight thousand, three hundred ten".