12778872837 has 4 divisors (see below), whose sum is σ = 17038497120. Its totient is φ = 8519248556.

The previous prime is 12778872791. The next prime is 12778872863. The reversal of 12778872837 is 73827887721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12778872837 - 2⁶ = 12778872773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12778872637) 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, 2129812137 + ... + 2129812142.

It is an arithmetic number, because the mean of its divisors is an integer number (4259624280).

Almost surely, 2^12778872837 is an apocalyptic number.

It is an amenable number.

12778872837 is a deficient number, since it is larger than the sum of its proper divisors (4259624283).

12778872837 is an equidigital number, since it uses as much as digits as its factorization.

12778872837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259624282.

The product of its digits is 14751744, while the sum is 60.

The spelling of 12778872837 in words is "twelve billion, seven hundred seventy-eight million, eight hundred seventy-two thousand, eight hundred thirty-seven".