21933403667 has 12 divisors (see below), whose sum is σ = 25752825720. Its totient is φ = 18624354336.

The previous prime is 21933403663. The next prime is 21933403693. The reversal of 21933403667 is 76630433912.

It is not a de Polignac number, because 21933403667 - 2² = 21933403663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21933403663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2086442 + ... + 2096927.

It is an arithmetic number, because the mean of its divisors is an integer number (2146068810).

Almost surely, 2^21933403667 is an apocalyptic number.

21933403667 is a deficient number, since it is larger than the sum of its proper divisors (3819422053).

21933403667 is a wasteful number, since it uses less digits than its factorization.

21933403667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183490 (or 4183483 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 44.

The spelling of 21933403667 in words is "twenty-one billion, nine hundred thirty-three million, four hundred three thousand, six hundred sixty-seven".