21124545462 has 12 divisors (see below), whose sum is σ = 45769848540. Its totient is φ = 7041515148.

The previous prime is 21124545461. The next prime is 21124545493. The reversal of 21124545462 is 26454542112.

21124545462 is a `hidden beast` number, since 2 + 112 + 45 + 45 + 462 = 666.

It is a super-2 number, since 2×21124545462² (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 (21124545461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586792912 + ... + 586792947.

It is an arithmetic number, because the mean of its divisors is an integer number (3814154045).

Almost surely, 2^21124545462 is an apocalyptic number.

21124545462 is an abundant number, since it is smaller than the sum of its proper divisors (24645303078).

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

21124545462 is a wasteful number, since it uses less digits than its factorization.

21124545462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173585867 (or 1173585864 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The spelling of 21124545462 in words is "twenty-one billion, one hundred twenty-four million, five hundred forty-five thousand, four hundred sixty-two".