24904640538 has 40 divisors (see below), whose sum is σ = 55873947360. Its totient is φ = 8291266920.

The previous prime is 24904640533. The next prime is 24904640549. The reversal of 24904640538 is 83504640942.

24904640538 is a `hidden beast` number, since 24 + 90 + 4 + 6 + 4 + 0 + 538 = 666.

It is a super-2 number, since 2×24904640538² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 24904640493 and 24904640502.

It is not an unprimeable number, because it can be changed into a prime (24904640533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36603 + ... + 226161.

It is an arithmetic number, because the mean of its divisors is an integer number (1396848684).

Almost surely, 2^24904640538 is an apocalyptic number.

24904640538 is an abundant number, since it is smaller than the sum of its proper divisors (30969306822).

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

24904640538 is a wasteful number, since it uses less digits than its factorization.

24904640538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190384 (or 190375 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 24904640538 in words is "twenty-four billion, nine hundred four million, six hundred forty thousand, five hundred thirty-eight".