12793679640 has 192 divisors, whose sum is σ = 50020588800. Its totient is φ = 2770350336.

The previous prime is 12793679627. The next prime is 12793679663. The reversal of 12793679640 is 4697639721.

It is a happy number.

12793679640 is a `hidden beast` number, since 1 + 279 + 367 + 9 + 6 + 4 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85722 + ... + 181481.

It is an arithmetic number, because the mean of its divisors is an integer number (260523900).

Almost surely, 2^12793679640 is an apocalyptic number.

12793679640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12793679640 is an abundant number, since it is smaller than the sum of its proper divisors (37226909160).

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

12793679640 is a wasteful number, since it uses less digits than its factorization.

12793679640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267246 (or 267239 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 12793679640 in words is "twelve billion, seven hundred ninety-three million, six hundred seventy-nine thousand, six hundred forty".