12660784951 has 4 divisors (see below), whose sum is σ = 12779110152. Its totient is φ = 12542459752.

The previous prime is 12660784933. The next prime is 12660784963. The reversal of 12660784951 is 15948706621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12660784951 - 2¹⁷ = 12660653879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12660784895 and 12660784904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660784921) 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, 59162440 + ... + 59162653.

It is an arithmetic number, because the mean of its divisors is an integer number (3194777538).

Almost surely, 2^12660784951 is an apocalyptic number.

12660784951 is a deficient number, since it is larger than the sum of its proper divisors (118325201).

12660784951 is a wasteful number, since it uses less digits than its factorization.

12660784951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118325200.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 12660784951 in words is "twelve billion, six hundred sixty million, seven hundred eighty-four thousand, nine hundred fifty-one".