10521454456 has 16 divisors (see below), whose sum is σ = 19728971640. Its totient is φ = 5260395360.

The previous prime is 10521454453. The next prime is 10521454457. The reversal of 10521454456 is 65445412501.

It is a super-2 number, since 2×10521454456² (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 (10521454453) 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, 139915 + ... + 201541.

Almost surely, 2^10521454456 is an apocalyptic number.

It is an amenable number.

10521454456 is a deficient number, since it is larger than the sum of its proper divisors (9207517184).

10521454456 is a wasteful number, since it uses less digits than its factorization.

10521454456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82974 (or 82970 counting only the distinct ones).

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

Adding to 10521454456 its reverse (65445412501), we get a palindrome (75966866957).

The spelling of 10521454456 in words is "ten billion, five hundred twenty-one million, four hundred fifty-four thousand, four hundred fifty-six".