24638040039 has 4 divisors (see below), whose sum is σ = 32850720056. Its totient is φ = 16425360024.

The previous prime is 24638040017. The next prime is 24638040043. The reversal of 24638040039 is 93004083642.

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

It is not a de Polignac number, because 24638040039 - 2¹⁶ = 24637974503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24638039979 and 24638040006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24638040439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4106340004 + ... + 4106340009.

It is an arithmetic number, because the mean of its divisors is an integer number (8212680014).

Almost surely, 2^24638040039 is an apocalyptic number.

24638040039 is a deficient number, since it is larger than the sum of its proper divisors (8212680017).

24638040039 is an equidigital number, since it uses as much as digits as its factorization.

24638040039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8212680016.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 24638040039 in words is "twenty-four billion, six hundred thirty-eight million, forty thousand, thirty-nine".