652656448638 has 24 divisors (see below), whose sum is σ = 1488514708200. Its totient is φ = 206102036304.

The previous prime is 652656448559. The next prime is 652656448643. The reversal of 652656448638 is 836844656256.

It is a happy number.

652656448638 is a `hidden beast` number, since 6 + 5 + 2 + 6 + 564 + 4 + 8 + 63 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 954175753 + ... + 954176436.

It is an arithmetic number, because the mean of its divisors is an integer number (62021446175).

Almost surely, 2^652656448638 is an apocalyptic number.

652656448638 is an abundant number, since it is smaller than the sum of its proper divisors (835858259562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

652656448638 is a wasteful number, since it uses less digits than its factorization.

652656448638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908352216 (or 1908352213 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 63.

The spelling of 652656448638 in words is "six hundred fifty-two billion, six hundred fifty-six million, four hundred forty-eight thousand, six hundred thirty-eight".