15315455213 has 2 divisors, whose sum is σ = 15315455214. Its totient is φ = 15315455212.

The previous prime is 15315455201. The next prime is 15315455219. The reversal of 15315455213 is 31255451351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15292290244 + 23164969 = 123662^2 + 4813^2 .

It is a cyclic number.

It is not a de Polignac number, because 15315455213 - 2⁶ = 15315455149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15315455219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7657727606 + 7657727607.

It is an arithmetic number, because the mean of its divisors is an integer number (7657727607).

Almost surely, 2^15315455213 is an apocalyptic number.

It is an amenable number.

15315455213 is a deficient number, since it is larger than the sum of its proper divisors (1).

15315455213 is an equidigital number, since it uses as much as digits as its factorization.

15315455213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45000, while the sum is 35.

The spelling of 15315455213 in words is "fifteen billion, three hundred fifteen million, four hundred fifty-five thousand, two hundred thirteen".