12693984851 has 4 divisors (see below), whose sum is σ = 12694212432. Its totient is φ = 12693757272.

The previous prime is 12693984767. The next prime is 12693984857. The reversal of 12693984851 is 15848939621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12693984851 is a prime.

It is a super-2 number, since 2×12693984851² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12693984857) 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, 32981 + ... + 162713.

It is an arithmetic number, because the mean of its divisors is an integer number (3173553108).

Almost surely, 2^12693984851 is an apocalyptic number.

12693984851 is a deficient number, since it is larger than the sum of its proper divisors (227581).

12693984851 is an equidigital number, since it uses as much as digits as its factorization.

12693984851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227580.

The product of its digits is 3732480, while the sum is 56.

The spelling of 12693984851 in words is "twelve billion, six hundred ninety-three million, nine hundred eighty-four thousand, eight hundred fifty-one".