21113662652 has 24 divisors (see below), whose sum is σ = 40384391040. Its totient is φ = 9615329280.

The previous prime is 21113662649. The next prime is 21113662663. The reversal of 21113662652 is 25626631112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5005877 + ... + 5010092.

It is an arithmetic number, because the mean of its divisors is an integer number (1682682960).

Almost surely, 2^21113662652 is an apocalyptic number.

It is an amenable number.

21113662652 is a deficient number, since it is larger than the sum of its proper divisors (19270728388).

21113662652 is a wasteful number, since it uses less digits than its factorization.

21113662652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016021 (or 10016019 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The spelling of 21113662652 in words is "twenty-one billion, one hundred thirteen million, six hundred sixty-two thousand, six hundred fifty-two".