215065413617 has 2 divisors, whose sum is σ = 215065413618. Its totient is φ = 215065413616.

The previous prime is 215065413599. The next prime is 215065413653. The reversal of 215065413617 is 716314560512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122493700081 + 92571713536 = 349991^2 + 304256^2 .

It is a cyclic number.

It is not a de Polignac number, because 215065413617 - 2¹⁴ = 215065397233 is a prime.

It is not a weakly prime, because it can be changed into another prime (215065410617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107532706808 + 107532706809.

It is an arithmetic number, because the mean of its divisors is an integer number (107532706809).

Almost surely, 2^215065413617 is an apocalyptic number.

It is an amenable number.

215065413617 is a deficient number, since it is larger than the sum of its proper divisors (1).

215065413617 is an equidigital number, since it uses as much as digits as its factorization.

215065413617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 215065413617 in words is "two hundred fifteen billion, sixty-five million, four hundred thirteen thousand, six hundred seventeen".