20603573244057 has 8 divisors (see below), whose sum is σ = 27480677530720. Its totient is φ = 13731092226720.

The previous prime is 20603573244047. The next prime is 20603573244061. The reversal of 20603573244057 is 75044237530602.

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

It is not a de Polignac number, because 20603573244057 - 2⁴ = 20603573244041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20603573243997 and 20603573244015.

It is not an unprimeable number, because it can be changed into a prime (20603573244047) 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, 1155806932 + ... + 1155824757.

It is an arithmetic number, because the mean of its divisors is an integer number (3435084691340).

Almost surely, 2^{20603573244057} is an apocalyptic number.

It is an amenable number.

20603573244057 is a deficient number, since it is larger than the sum of its proper divisors (6877104286663).

20603573244057 is a wasteful number, since it uses less digits than its factorization.

20603573244057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311634663.

The product of its (nonzero) digits is 4233600, while the sum is 48.

The spelling of 20603573244057 in words is "twenty trillion, six hundred three billion, five hundred seventy-three million, two hundred forty-four thousand, fifty-seven".