12667718954 has 16 divisors (see below), whose sum is σ = 20730901536. Its totient is φ = 5757524400.

The previous prime is 12667718951. The next prime is 12667718983. The reversal of 12667718954 is 45981776621.

It is a happy number.

It is a super-2 number, since 2×12667718954² (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 12667718954.

It is not an unprimeable number, because it can be changed into a prime (12667718951) 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, 317249 + ... + 354939.

It is an arithmetic number, because the mean of its divisors is an integer number (1295681346).

Almost surely, 2^12667718954 is an apocalyptic number.

12667718954 is a deficient number, since it is larger than the sum of its proper divisors (8063182582).

12667718954 is a wasteful number, since it uses less digits than its factorization.

12667718954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52981.

The product of its digits is 5080320, while the sum is 56.

The spelling of 12667718954 in words is "twelve billion, six hundred sixty-seven million, seven hundred eighteen thousand, nine hundred fifty-four".