24136406440 has 32 divisors (see below), whose sum is σ = 55631477160. Its totient is φ = 9419084800.

The previous prime is 24136406381. The next prime is 24136406443. The reversal of 24136406440 is 4460463142.

It can be written as a sum of positive squares in 4 ways, for example, as 19226040964 + 4910365476 = 138658^2 + 70074^2 .

It is a super-2 number, since 2×24136406440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 24136406396 and 24136406405.

It is not an unprimeable number, because it can be changed into a prime (24136406443) 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 7 ways as a sum of consecutive naturals, for example, 7357021 + ... + 7360300.

Almost surely, 2^24136406440 is an apocalyptic number.

24136406440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24136406440 is an abundant number, since it is smaller than the sum of its proper divisors (31495070720).

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

24136406440 is a wasteful number, since it uses less digits than its factorization.

24136406440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14717373 (or 14717369 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 24136406440 its reverse (4460463142), we get a palindrome (28596869582).

The spelling of 24136406440 in words is "twenty-four billion, one hundred thirty-six million, four hundred six thousand, four hundred forty".