216389466172803 has 120 divisors (see below), whose sum is σ = 381900661173248. Its totient is φ = 108783966060000.

The previous prime is 216389466172799. The next prime is 216389466172811. The reversal of 216389466172803 is 308271664983612.

It is not a de Polignac number, because 216389466172803 - 2² = 216389466172799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216389466172703) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 23013978 + ... + 31022928.

Almost surely, 2^{216389466172803} is an apocalyptic number.

216389466172803 is a deficient number, since it is larger than the sum of its proper divisors (165511195000445).

216389466172803 is an equidigital number, since it uses as much as digits as its factorization.

216389466172803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8009035 (or 8009003 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 66.

The spelling of 216389466172803 in words is "two hundred sixteen trillion, three hundred eighty-nine billion, four hundred sixty-six million, one hundred seventy-two thousand, eight hundred three".