12663751881 has 8 divisors (see below), whose sum is σ = 18420002784. Its totient is φ = 7675001120.

The previous prime is 12663751873. The next prime is 12663751901. The reversal of 12663751881 is 18815736621.

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 12663751881 - 2³ = 12663751873 is a prime.

It is a super-2 number, since 2×12663751881² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12663751881.

It is not an unprimeable number, because it can be changed into a prime (12663751811) 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, 191874996 + ... + 191875061.

It is an arithmetic number, because the mean of its divisors is an integer number (2302500348).

Almost surely, 2^12663751881 is an apocalyptic number.

12663751881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12663751881 is a deficient number, since it is larger than the sum of its proper divisors (5756250903).

12663751881 is a wasteful number, since it uses less digits than its factorization.

12663751881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383750071.

The product of its digits is 483840, while the sum is 48.

The spelling of 12663751881 in words is "twelve billion, six hundred sixty-three million, seven hundred fifty-one thousand, eight hundred eighty-one".