12873237821 has 8 divisors (see below), whose sum is σ = 13005425664. Its totient is φ = 12741564160.

The previous prime is 12873237809. The next prime is 12873237823.

12873237821 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 12873237821 - 2⁶ = 12873237757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12873237823) 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, 78116 + ... + 178461.

It is an arithmetic number, because the mean of its divisors is an integer number (1625678208).

Almost surely, 2^12873237821 is an apocalyptic number.

It is an amenable number.

12873237821 is a deficient number, since it is larger than the sum of its proper divisors (132187843).

12873237821 is a wasteful number, since it uses less digits than its factorization.

12873237821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257091.

The product of its digits is 225792, while the sum is 44.

The spelling of 12873237821 in words is "twelve billion, eight hundred seventy-three million, two hundred thirty-seven thousand, eight hundred twenty-one".