215671147652687 has 2 divisors, whose sum is σ = 215671147652688. Its totient is φ = 215671147652686.

The previous prime is 215671147652633. The next prime is 215671147652767. The reversal of 215671147652687 is 786256741176512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215671147652687 - 2⁸ = 215671147652431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215671147652287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107835573826343 + 107835573826344.

It is an arithmetic number, because the mean of its divisors is an integer number (107835573826344).

Almost surely, 2^{215671147652687} is an apocalyptic number.

215671147652687 is a deficient number, since it is larger than the sum of its proper divisors (1).

215671147652687 is an equidigital number, since it uses as much as digits as its factorization.

215671147652687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 237081600, while the sum is 68.

The spelling of 215671147652687 in words is "two hundred fifteen trillion, six hundred seventy-one billion, one hundred forty-seven million, six hundred fifty-two thousand, six hundred eighty-seven".