20451445324 has 12 divisors (see below), whose sum is σ = 35869743000. Its totient is φ = 10202947328.

The previous prime is 20451445319. The next prime is 20451445327. The reversal of 20451445324 is 42354415402.

It is a super-2 number, since 2×20451445324² (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 20451445324.

It is not an unprimeable number, because it can be changed into a prime (20451445327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5691814 + ... + 5695405.

It is an arithmetic number, because the mean of its divisors is an integer number (2989145250).

Almost surely, 2^20451445324 is an apocalyptic number.

It is an amenable number.

20451445324 is a deficient number, since it is larger than the sum of its proper divisors (15418297676).

20451445324 is a wasteful number, since it uses less digits than its factorization.

20451445324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11387672 (or 11387670 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

The spelling of 20451445324 in words is "twenty billion, four hundred fifty-one million, four hundred forty-five thousand, three hundred twenty-four".