10644327580 has 24 divisors (see below), whose sum is σ = 22355449200. Its totient is φ = 4257281280.

The previous prime is 10644327541. The next prime is 10644327583. The reversal of 10644327580 is 8572344601.

It is a super-2 number, since 2×10644327580² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10644327583) 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, 218895 + ... + 263065.

It is an arithmetic number, because the mean of its divisors is an integer number (931477050).

Almost surely, 2^10644327580 is an apocalyptic number.

10644327580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10644327580 is an abundant number, since it is smaller than the sum of its proper divisors (11711121620).

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

10644327580 is a wasteful number, since it uses less digits than its factorization.

10644327580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56229 (or 56227 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 10644327580 in words is "ten billion, six hundred forty-four million, three hundred twenty-seven thousand, five hundred eighty".