10521442544 has 40 divisors (see below), whose sum is σ = 21188591760. Its totient is φ = 5056846848.

The previous prime is 10521442541. The next prime is 10521442549. The reversal of 10521442544 is 44524412501.

It is a super-2 number, since 2×10521442544² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10521442544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521442541) 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, 57929 + ... + 156200.

It is an arithmetic number, because the mean of its divisors is an integer number (529714794).

Almost surely, 2^10521442544 is an apocalyptic number.

It is an amenable number.

10521442544 is an abundant number, since it is smaller than the sum of its proper divisors (10667149216).

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

10521442544 is a wasteful number, since it uses less digits than its factorization.

10521442544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214257 (or 214251 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The spelling of 10521442544 in words is "ten billion, five hundred twenty-one million, four hundred forty-two thousand, five hundred forty-four".