12707878723 has 4 divisors (see below), whose sum is σ = 12838887880. Its totient is φ = 12576869568.

The previous prime is 12707878721. The next prime is 12707878747. The reversal of 12707878723 is 32787870721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32787870721 = 83 ⋅395034587.

It is a cyclic number.

It is not a de Polignac number, because 12707878723 - 2¹ = 12707878721 is a prime.

It is a super-2 number, since 2×12707878723² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12707878721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65504433 + ... + 65504626.

It is an arithmetic number, because the mean of its divisors is an integer number (3209721970).

Almost surely, 2^12707878723 is an apocalyptic number.

12707878723 is a deficient number, since it is larger than the sum of its proper divisors (131009157).

12707878723 is an equidigital number, since it uses as much as digits as its factorization.

12707878723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131009156.

The product of its (nonzero) digits is 1843968, while the sum is 52.

The spelling of 12707878723 in words is "twelve billion, seven hundred seven million, eight hundred seventy-eight thousand, seven hundred twenty-three".