13157451317 has 2 divisors, whose sum is σ = 13157451318. Its totient is φ = 13157451316.

The previous prime is 13157451311. The next prime is 13157451353. The reversal of 13157451317 is 71315475131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8236288516 + 4921162801 = 90754^2 + 70151^2 .

It is a cyclic number.

It is not a de Polignac number, because 13157451317 - 2⁶ = 13157451253 is a prime.

It is a super-3 number, since 3×13157451317³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13157451311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6578725658 + 6578725659.

It is an arithmetic number, because the mean of its divisors is an integer number (6578725659).

Almost surely, 2^13157451317 is an apocalyptic number.

It is an amenable number.

13157451317 is a deficient number, since it is larger than the sum of its proper divisors (1).

13157451317 is an equidigital number, since it uses as much as digits as its factorization.

13157451317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 38.

The spelling of 13157451317 in words is "thirteen billion, one hundred fifty-seven million, four hundred fifty-one thousand, three hundred seventeen".