215500553199947 has 2 divisors, whose sum is σ = 215500553199948. Its totient is φ = 215500553199946.

The previous prime is 215500553199941. The next prime is 215500553200043. The reversal of 215500553199947 is 749991355005512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215500553199947 - 2¹⁰ = 215500553198923 is a prime.

It is not a weakly prime, because it can be changed into another prime (215500553199941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107750276599973 + 107750276599974.

It is an arithmetic number, because the mean of its divisors is an integer number (107750276599974).

Almost surely, 2^{215500553199947} is an apocalyptic number.

215500553199947 is a deficient number, since it is larger than the sum of its proper divisors (1).

215500553199947 is an equidigital number, since it uses as much as digits as its factorization.

215500553199947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76545000, while the sum is 65.

The spelling of 215500553199947 in words is "two hundred fifteen trillion, five hundred billion, five hundred fifty-three million, one hundred ninety-nine thousand, nine hundred forty-seven".