12837878621 has 8 divisors (see below), whose sum is σ = 12950817600. Its totient is φ = 12725233920.

The previous prime is 12837878597. The next prime is 12837878639. The reversal of 12837878621 is 12687873821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12837878621 is a prime.

It is a super-2 number, since 2×12837878621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12837878821) 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, 14525 + ... + 160893.

It is an arithmetic number, because the mean of its divisors is an integer number (1618852200).

Almost surely, 2^12837878621 is an apocalyptic number.

It is an amenable number.

12837878621 is a deficient number, since it is larger than the sum of its proper divisors (112938979).

12837878621 is a wasteful number, since it uses less digits than its factorization.

12837878621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147139.

The product of its digits is 1806336, while the sum is 53.

The spelling of 12837878621 in words is "twelve billion, eight hundred thirty-seven million, eight hundred seventy-eight thousand, six hundred twenty-one".