215416263 has 12 divisors (see below), whose sum is σ = 297470888. Its totient is φ = 138657120.

The previous prime is 215416259. The next prime is 215416273. The reversal of 215416263 is 362614512.

It is not a de Polignac number, because 215416263 - 2² = 215416259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215416263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215416273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40168 + ... + 45213.

Almost surely, 2^215416263 is an apocalyptic number.

215416263 is a deficient number, since it is larger than the sum of its proper divisors (82054625).

215416263 is an equidigital number, since it uses as much as digits as its factorization.

215416263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85442 (or 85413 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 215416263 is about 14677.0658852510. The cubic root of 215416263 is about 599.4590151500.

The spelling of 215416263 in words is "two hundred fifteen million, four hundred sixteen thousand, two hundred sixty-three".