12154679159317 has 2 divisors, whose sum is σ = 12154679159318. Its totient is φ = 12154679159316.

The previous prime is 12154679159267. The next prime is 12154679159369. The reversal of 12154679159317 is 71395197645121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7568738285956 + 4585940873361 = 2751134^2 + 2141481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12154679159317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12154679153317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077339579658 + 6077339579659.

It is an arithmetic number, because the mean of its divisors is an integer number (6077339579659).

Almost surely, 2^{12154679159317} is an apocalyptic number.

It is an amenable number.

12154679159317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154679159317 is an equidigital number, since it uses as much as digits as its factorization.

12154679159317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14288400, while the sum is 61.

The spelling of 12154679159317 in words is "twelve trillion, one hundred fifty-four billion, six hundred seventy-nine million, one hundred fifty-nine thousand, three hundred seventeen".