216431480263 has 4 divisors (see below), whose sum is σ = 216898935328. Its totient is φ = 215964025200.

The previous prime is 216431480219. The next prime is 216431480273. The reversal of 216431480263 is 362084134612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216431480263 - 2¹⁷ = 216431349191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216431480273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233726838 + ... + 233727763.

It is an arithmetic number, because the mean of its divisors is an integer number (54224733832).

Almost surely, 2^216431480263 is an apocalyptic number.

216431480263 is a deficient number, since it is larger than the sum of its proper divisors (467455065).

216431480263 is an equidigital number, since it uses as much as digits as its factorization.

216431480263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467455064.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 216431480263 in words is "two hundred sixteen billion, four hundred thirty-one million, four hundred eighty thousand, two hundred sixty-three".