215115346207 has 2 divisors, whose sum is σ = 215115346208. Its totient is φ = 215115346206.

The previous prime is 215115346183. The next prime is 215115346223. The reversal of 215115346207 is 702643511512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215115346207 is a prime.

It is a super-2 number, since 2×215115346207² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215115344207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107557673103 + 107557673104.

It is an arithmetic number, because the mean of its divisors is an integer number (107557673104).

Almost surely, 2^215115346207 is an apocalyptic number.

215115346207 is a deficient number, since it is larger than the sum of its proper divisors (1).

215115346207 is an equidigital number, since it uses as much as digits as its factorization.

215115346207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 215115346207 its reverse (702643511512), we get a palindrome (917758857719).

The spelling of 215115346207 in words is "two hundred fifteen billion, one hundred fifteen million, three hundred forty-six thousand, two hundred seven".