215715611207 has 2 divisors, whose sum is σ = 215715611208. Its totient is φ = 215715611206.

The previous prime is 215715611197. The next prime is 215715611233. The reversal of 215715611207 is 702116517512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215715611207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215715611297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107857805603 + 107857805604.

It is an arithmetic number, because the mean of its divisors is an integer number (107857805604).

Almost surely, 2^215715611207 is an apocalyptic number.

215715611207 is a deficient number, since it is larger than the sum of its proper divisors (1).

215715611207 is an equidigital number, since it uses as much as digits as its factorization.

215715611207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 38.

The spelling of 215715611207 in words is "two hundred fifteen billion, seven hundred fifteen million, six hundred eleven thousand, two hundred seven".