21614446636 has 6 divisors (see below), whose sum is σ = 37825281620. Its totient is φ = 10807223316.

The previous prime is 21614446619. The next prime is 21614446699. The reversal of 21614446636 is 63664441612.

It is a junction number, because it is equal to n+sod(n) for n = 21614446592 and 21614446601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2701805826 + ... + 2701805833.

Almost surely, 2^21614446636 is an apocalyptic number.

It is an amenable number.

21614446636 is a deficient number, since it is larger than the sum of its proper divisors (16210834984).

21614446636 is a wasteful number, since it uses less digits than its factorization.

21614446636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5403611663 (or 5403611661 counting only the distinct ones).

The product of its digits is 497664, while the sum is 43.

The spelling of 21614446636 in words is "twenty-one billion, six hundred fourteen million, four hundred forty-six thousand, six hundred thirty-six".