12661884051 has 8 divisors (see below), whose sum is σ = 16990044624. Its totient is φ = 8387489760.

The previous prime is 12661884047. The next prime is 12661884101. The reversal of 12661884051 is 15048816621.

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

It is not a de Polignac number, because 12661884051 - 2² = 12661884047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12661883994 and 12661884012.

It is not an unprimeable number, because it can be changed into a prime (12661884751) 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, 13441020 + ... + 13441961.

It is an arithmetic number, because the mean of its divisors is an integer number (2123755578).

Almost surely, 2^12661884051 is an apocalyptic number.

12661884051 is a deficient number, since it is larger than the sum of its proper divisors (4328160573).

12661884051 is a wasteful number, since it uses less digits than its factorization.

12661884051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26883141.

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 12661884051 in words is "twelve billion, six hundred sixty-one million, eight hundred eighty-four thousand, fifty-one".