24540040642 has 16 divisors (see below), whose sum is σ = 41008557240. Its totient is φ = 10935614592.

The previous prime is 24540040633. The next prime is 24540040643. The reversal of 24540040642 is 24604004542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16438060521 + 8101980121 = 128211^2 + 90011^2 .

It is a super-2 number, since 2×24540040642² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (24540040643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16272483 + ... + 16273990.

Almost surely, 2^24540040642 is an apocalyptic number.

24540040642 is a deficient number, since it is larger than the sum of its proper divisors (16468516598).

24540040642 is a wasteful number, since it uses less digits than its factorization.

24540040642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32546517.

The product of its (nonzero) digits is 30720, while the sum is 31.

The spelling of 24540040642 in words is "twenty-four billion, five hundred forty million, forty thousand, six hundred forty-two".