215014304657 has 2 divisors, whose sum is σ = 215014304658. Its totient is φ = 215014304656.

The previous prime is 215014304629. The next prime is 215014304671. The reversal of 215014304657 is 756403410512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122623230976 + 92391073681 = 350176^2 + 303959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215014304657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215014304657.

It is not a weakly prime, because it can be changed into another prime (215014304627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107507152328 + 107507152329.

It is an arithmetic number, because the mean of its divisors is an integer number (107507152329).

Almost surely, 2^215014304657 is an apocalyptic number.

It is an amenable number.

215014304657 is a deficient number, since it is larger than the sum of its proper divisors (1).

215014304657 is an equidigital number, since it uses as much as digits as its factorization.

215014304657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 215014304657 in words is "two hundred fifteen billion, fourteen million, three hundred four thousand, six hundred fifty-seven".