21416874903 has 10 divisors (see below), whose sum is σ = 31993109544. Its totient is φ = 14277916548.

The previous prime is 21416874901. The next prime is 21416874929. The reversal of 21416874903 is 30947861412.

It is not a de Polignac number, because 21416874903 - 2¹ = 21416874901 is a prime.

It is a super-2 number, since 2×21416874903² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21416874901) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 132202851 + ... + 132203012.

Almost surely, 2^21416874903 is an apocalyptic number.

21416874903 is a deficient number, since it is larger than the sum of its proper divisors (10576234641).

21416874903 is an equidigital number, since it uses as much as digits as its factorization.

21416874903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264405875 (or 264405866 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 21416874903 in words is "twenty-one billion, four hundred sixteen million, eight hundred seventy-four thousand, nine hundred three".