21413606384 has 10 divisors (see below), whose sum is σ = 41488862400. Its totient is φ = 10706803184.

The previous prime is 21413606359. The next prime is 21413606387. The reversal of 21413606384 is 48360631412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413606387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669175184 + ... + 669175215.

It is an arithmetic number, because the mean of its divisors is an integer number (4148886240).

Almost surely, 2^21413606384 is an apocalyptic number.

It is an amenable number.

21413606384 is a deficient number, since it is larger than the sum of its proper divisors (20075256016).

21413606384 is a wasteful number, since it uses less digits than its factorization.

21413606384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338350407 (or 1338350401 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 21413606384 in words is "twenty-one billion, four hundred thirteen million, six hundred six thousand, three hundred eighty-four".