15141520217 has 2 divisors, whose sum is σ = 15141520218. Its totient is φ = 15141520216.

The previous prime is 15141520201. The next prime is 15141520243. The reversal of 15141520217 is 71202514151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14529650521 + 611869696 = 120539^2 + 24736^2 .

It is a cyclic number.

It is not a de Polignac number, because 15141520217 - 2⁴ = 15141520201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15141520217.

It is not a weakly prime, because it can be changed into another prime (15141520417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7570760108 + 7570760109.

It is an arithmetic number, because the mean of its divisors is an integer number (7570760109).

Almost surely, 2^15141520217 is an apocalyptic number.

It is an amenable number.

15141520217 is a deficient number, since it is larger than the sum of its proper divisors (1).

15141520217 is an equidigital number, since it uses as much as digits as its factorization.

15141520217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 29.

The spelling of 15141520217 in words is "fifteen billion, one hundred forty-one million, five hundred twenty thousand, two hundred seventeen".