12794864781 has 8 divisors (see below), whose sum is σ = 17066275264. Its totient is φ = 8526682080.

The previous prime is 12794864759. The next prime is 12794864783. The reversal of 12794864781 is 18746849721.

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

It is not a de Polignac number, because 12794864781 - 2¹¹ = 12794862733 is a prime.

It is a super-2 number, since 2×12794864781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12794864783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797680 + ... + 813561.

It is an arithmetic number, because the mean of its divisors is an integer number (2133284408).

Almost surely, 2^12794864781 is an apocalyptic number.

It is an amenable number.

12794864781 is a deficient number, since it is larger than the sum of its proper divisors (4271410483).

12794864781 is a wasteful number, since it uses less digits than its factorization.

12794864781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613891.

The product of its digits is 5419008, while the sum is 57.

The spelling of 12794864781 in words is "twelve billion, seven hundred ninety-four million, eight hundred sixty-four thousand, seven hundred eighty-one".