24227621640 has 80 divisors (see below), whose sum is σ = 81431739180. Its totient is φ = 6460698240.

The previous prime is 24227621633. The next prime is 24227621653. The reversal of 24227621640 is 4612672242.

24227621640 is a `hidden beast` number, since 2 + 4 + 2 + 2 + 7 + 6 + 2 + 1 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24124923684 + 102697956 = 155322^2 + 10134^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 24227621595 and 24227621604.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3735591 + ... + 3742070.

Almost surely, 2^24227621640 is an apocalyptic number.

24227621640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24227621640 is an abundant number, since it is smaller than the sum of its proper divisors (57204117540).

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

24227621640 is a wasteful number, since it uses less digits than its factorization.

24227621640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7477684 (or 7477671 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 24227621640 in words is "twenty-four billion, two hundred twenty-seven million, six hundred twenty-one thousand, six hundred forty".