21652673734630 has 16 divisors (see below), whose sum is σ = 39112532913744. Its totient is φ = 8630465006880.

The previous prime is 21652673734619. The next prime is 21652673734631. The reversal of 21652673734630 is 3643737625612.

It is a super-2 number, since 2×21652673734630² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21652673734631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3825557901 + ... + 3825563560.

It is an arithmetic number, because the mean of its divisors is an integer number (2444533307109).

Almost surely, 2^{21652673734630} is an apocalyptic number.

21652673734630 is a deficient number, since it is larger than the sum of its proper divisors (17459859179114).

21652673734630 is a wasteful number, since it uses less digits than its factorization.

21652673734630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651121751.

The product of its (nonzero) digits is 22861440, while the sum is 55.

The spelling of 21652673734630 in words is "twenty-one trillion, six hundred fifty-two billion, six hundred seventy-three million, seven hundred thirty-four thousand, six hundred thirty".