12679901954 has 8 divisors (see below), whose sum is σ = 19023206268. Its totient is φ = 6338833200.

The previous prime is 12679901953. The next prime is 12679901977. The reversal of 12679901954 is 45910997621.

It can be written as a sum of positive squares in 2 ways, for example, as 12015448225 + 664453729 = 109615^2 + 25777^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12679901896 and 12679901905.

It is not an unprimeable number, because it can be changed into a prime (12679901953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544637 + ... + 567440.

Almost surely, 2^12679901954 is an apocalyptic number.

12679901954 is a deficient number, since it is larger than the sum of its proper divisors (6343304314).

12679901954 is a wasteful number, since it uses less digits than its factorization.

12679901954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117780.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 12679901954 in words is "twelve billion, six hundred seventy-nine million, nine hundred one thousand, nine hundred fifty-four".