20459817746 has 8 divisors (see below), whose sum is σ = 30750741504. Its totient is φ = 10209570580.

The previous prime is 20459817733. The next prime is 20459817767. The reversal of 20459817746 is 64771895402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10167890 + ... + 10169901.

It is an arithmetic number, because the mean of its divisors is an integer number (3843842688).

Almost surely, 2^20459817746 is an apocalyptic number.

20459817746 is a deficient number, since it is larger than the sum of its proper divisors (10290923758).

20459817746 is a wasteful number, since it uses less digits than its factorization.

20459817746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20338296.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 20459817746 in words is "twenty billion, four hundred fifty-nine million, eight hundred seventeen thousand, seven hundred forty-six".