21914613628 has 48 divisors (see below), whose sum is σ = 40538232000. Its totient is φ = 10349900288.

The previous prime is 21914613619. The next prime is 21914613629. The reversal of 21914613628 is 82631641912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21914613629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2202168 + ... + 2212096.

It is an arithmetic number, because the mean of its divisors is an integer number (844546500).

Almost surely, 2^21914613628 is an apocalyptic number.

It is an amenable number.

21914613628 is a deficient number, since it is larger than the sum of its proper divisors (18623618372).

21914613628 is a wasteful number, since it uses less digits than its factorization.

21914613628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10374 (or 10372 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The spelling of 21914613628 in words is "twenty-one billion, nine hundred fourteen million, six hundred thirteen thousand, six hundred twenty-eight".