10644120544 has 24 divisors (see below), whose sum is σ = 20965263480. Its totient is φ = 5319609216.

The previous prime is 10644120533. The next prime is 10644120547. The reversal of 10644120544 is 44502144601.

It is a super-2 number, since 2×10644120544² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10644120547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4999 + ... + 145990.

It is an arithmetic number, because the mean of its divisors is an integer number (873552645).

Almost surely, 2^10644120544 is an apocalyptic number.

It is an amenable number.

10644120544 is a deficient number, since it is larger than the sum of its proper divisors (10321142936).

10644120544 is a wasteful number, since it uses less digits than its factorization.

10644120544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153202 (or 153194 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 10644120544 in words is "ten billion, six hundred forty-four million, one hundred twenty thousand, five hundred forty-four".