24491385140 has 12 divisors (see below), whose sum is σ = 51431908836. Its totient is φ = 9796554048.

The previous prime is 24491385133. The next prime is 24491385161. The reversal of 24491385140 is 4158319442.

It can be written as a sum of positive squares in 2 ways, for example, as 5907152164 + 18584232976 = 76858^2 + 136324^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612284609 + ... + 612284648.

It is an arithmetic number, because the mean of its divisors is an integer number (4285992403).

Almost surely, 2^24491385140 is an apocalyptic number.

24491385140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24491385140 is an abundant number, since it is smaller than the sum of its proper divisors (26940523696).

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

24491385140 is a wasteful number, since it uses less digits than its factorization.

24491385140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224569266 (or 1224569264 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 24491385140 in words is "twenty-four billion, four hundred ninety-one million, three hundred eighty-five thousand, one hundred forty".