12856870294 has 4 divisors (see below), whose sum is σ = 19285305444. Its totient is φ = 6428435146.

The previous prime is 12856870291. The next prime is 12856870361. The reversal of 12856870294 is 49207865821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49207865821 = 23 ⋅2139472427.

It is a super-2 number, since 2×12856870294² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856870291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214217572 + ... + 3214217575.

It is an arithmetic number, because the mean of its divisors is an integer number (4821326361).

Almost surely, 2^12856870294 is an apocalyptic number.

12856870294 is a deficient number, since it is larger than the sum of its proper divisors (6428435150).

12856870294 is an equidigital number, since it uses as much as digits as its factorization.

12856870294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6428435149.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 12856870294 in words is "twelve billion, eight hundred fifty-six million, eight hundred seventy thousand, two hundred ninety-four".