10521564445 has 16 divisors (see below), whose sum is σ = 14724057600. Its totient is φ = 7214785872.

The previous prime is 10521564407. The next prime is 10521564463. The reversal of 10521564445 is 54446512501.

It is not a de Polignac number, because 10521564445 - 2⁹ = 10521563933 is a prime.

It is a super-2 number, since 2×10521564445² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3065797 + ... + 3069226.

It is an arithmetic number, because the mean of its divisors is an integer number (920253600).

Almost surely, 2^10521564445 is an apocalyptic number.

It is an amenable number.

10521564445 is a deficient number, since it is larger than the sum of its proper divisors (4202493155).

10521564445 is an frugal number, since it uses more digits than its factorization.

10521564445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6135049 (or 6135035 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 10521564445 in words is "ten billion, five hundred twenty-one million, five hundred sixty-four thousand, four hundred forty-five".