12896638470 has 24 divisors (see below), whose sum is σ = 33531260256. Its totient is φ = 3439103568.

The previous prime is 12896638451. The next prime is 12896638471. The reversal of 12896638470 is 7483669821.

12896638470 is a `hidden beast` number, since 1 + 2 + 89 + 66 + 38 + 470 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12896638471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71647902 + ... + 71648081.

It is an arithmetic number, because the mean of its divisors is an integer number (1397135844).

Almost surely, 2^12896638470 is an apocalyptic number.

12896638470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12896638470 is an abundant number, since it is smaller than the sum of its proper divisors (20634621786).

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

12896638470 is a wasteful number, since it uses less digits than its factorization.

12896638470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143295996 (or 143295993 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 12896638470 in words is "twelve billion, eight hundred ninety-six million, six hundred thirty-eight thousand, four hundred seventy".