24215205140 has 36 divisors (see below), whose sum is σ = 59154289236. Its totient is φ = 8302355712.

The previous prime is 24215205121. The next prime is 24215205149. The reversal of 24215205140 is 4150251242.

It can be written as a sum of positive squares in 2 ways, for example, as 5781169156 + 18434035984 = 76034^2 + 135772^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24215205149) 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 11 ways as a sum of consecutive naturals, for example, 12353717 + ... + 12355676.

It is an arithmetic number, because the mean of its divisors is an integer number (1643174701).

Almost surely, 2^24215205140 is an apocalyptic number.

24215205140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24215205140 is an abundant number, since it is smaller than the sum of its proper divisors (34939084096).

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

24215205140 is a wasteful number, since it uses less digits than its factorization.

24215205140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24709416 (or 24709407 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 24215205140 its reverse (4150251242), we get a palindrome (28365456382).

The spelling of 24215205140 in words is "twenty-four billion, two hundred fifteen million, two hundred five thousand, one hundred forty".