13311038857 has 2 divisors, whose sum is σ = 13311038858. Its totient is φ = 13311038856.

The previous prime is 13311038821. The next prime is 13311038863. The reversal of 13311038857 is 75883011331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10736897161 + 2574141696 = 103619^2 + 50736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13311038857 is a prime.

It is not a weakly prime, because it can be changed into another prime (13311038057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6655519428 + 6655519429.

It is an arithmetic number, because the mean of its divisors is an integer number (6655519429).

Almost surely, 2^13311038857 is an apocalyptic number.

It is an amenable number.

13311038857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13311038857 is an equidigital number, since it uses as much as digits as its factorization.

13311038857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 13311038857 in words is "thirteen billion, three hundred eleven million, thirty-eight thousand, eight hundred fifty-seven".