24640555442 has 4 divisors (see below), whose sum is σ = 36960833166. Its totient is φ = 12320277720.

The previous prime is 24640555399. The next prime is 24640555451. The reversal of 24640555442 is 24455504642.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15567802441 + 9072753001 = 124771^2 + 95251^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 24640555442.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6160138859 + ... + 6160138862.

Almost surely, 2^24640555442 is an apocalyptic number.

24640555442 is a deficient number, since it is larger than the sum of its proper divisors (12320277724).

24640555442 is a wasteful number, since it uses less digits than its factorization.

24640555442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320277723.

The product of its (nonzero) digits is 768000, while the sum is 41.

The spelling of 24640555442 in words is "twenty-four billion, six hundred forty million, five hundred fifty-five thousand, four hundred forty-two".