24973779938 has 4 divisors (see below), whose sum is σ = 37460669910. Its totient is φ = 12486889968.

The previous prime is 24973779931. The next prime is 24973779947. The reversal of 24973779938 is 83997737942.

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., 21299359249 + 3674420689 = 145943^2 + 60617^2 .

It is not an unprimeable number, because it can be changed into a prime (24973779931) 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 as a sum of consecutive naturals, namely, 6243444983 + ... + 6243444986.

Almost surely, 2^24973779938 is an apocalyptic number.

24973779938 is a deficient number, since it is larger than the sum of its proper divisors (12486889972).

24973779938 is a wasteful number, since it uses less digits than its factorization.

24973779938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486889971.

The product of its digits is 144027072, while the sum is 68.

The spelling of 24973779938 in words is "twenty-four billion, nine hundred seventy-three million, seven hundred seventy-nine thousand, nine hundred thirty-eight".