15071518213 has 2 divisors, whose sum is σ = 15071518214. Its totient is φ = 15071518212.

The previous prime is 15071518193. The next prime is 15071518243. The reversal of 15071518213 is 31281517051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10278309924 + 4793208289 = 101382^2 + 69233^2 .

It is a cyclic number.

It is not a de Polignac number, because 15071518213 - 2²⁵ = 15037963781 is a prime.

It is a super-2 number, since 2×15071518213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15071518243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7535759106 + 7535759107.

It is an arithmetic number, because the mean of its divisors is an integer number (7535759107).

Almost surely, 2^15071518213 is an apocalyptic number.

It is an amenable number.

15071518213 is a deficient number, since it is larger than the sum of its proper divisors (1).

15071518213 is an equidigital number, since it uses as much as digits as its factorization.

15071518213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 15071518213 in words is "fifteen billion, seventy-one million, five hundred eighteen thousand, two hundred thirteen".