20001823617 has 16 divisors (see below), whose sum is σ = 26927474112. Its totient is φ = 13205446080.

The previous prime is 20001823607. The next prime is 20001823631. The reversal of 20001823617 is 71632810002.

It is not a de Polignac number, because 20001823617 - 2⁴ = 20001823601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001823607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127863 + ... + 1145459.

It is an arithmetic number, because the mean of its divisors is an integer number (1682967132).

Almost surely, 2^20001823617 is an apocalyptic number.

It is an amenable number.

20001823617 is a deficient number, since it is larger than the sum of its proper divisors (6925650495).

20001823617 is a wasteful number, since it uses less digits than its factorization.

20001823617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21248.

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 20001823617 in words is "twenty billion, one million, eight hundred twenty-three thousand, six hundred seventeen".