215671147652287 has 2 divisors, whose sum is σ = 215671147652288. Its totient is φ = 215671147652286.

The previous prime is 215671147652269. The next prime is 215671147652293. The reversal of 215671147652287 is 782256741176512.

215671147652287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215671147652287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215671147652297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107835573826143 + 107835573826144.

It is an arithmetic number, because the mean of its divisors is an integer number (107835573826144).

Almost surely, 2^{215671147652287} is an apocalyptic number.

215671147652287 is a deficient number, since it is larger than the sum of its proper divisors (1).

215671147652287 is an equidigital number, since it uses as much as digits as its factorization.

215671147652287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79027200, while the sum is 64.

The spelling of 215671147652287 in words is "two hundred fifteen trillion, six hundred seventy-one billion, one hundred forty-seven million, six hundred fifty-two thousand, two hundred eighty-seven".