20985089059 has 16 divisors (see below), whose sum is σ = 23152963680. Its totient is φ = 18861120000.

The previous prime is 20985089057. The next prime is 20985089123. The reversal of 20985089059 is 95098058902.

It is a cyclic number.

It is not a de Polignac number, because 20985089059 - 2¹ = 20985089057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20985089057) 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, 774379 + ... + 801019.

It is an arithmetic number, because the mean of its divisors is an integer number (1447060230).

Almost surely, 2^20985089059 is an apocalyptic number.

20985089059 is a deficient number, since it is larger than the sum of its proper divisors (2167874621).

20985089059 is a wasteful number, since it uses less digits than its factorization.

20985089059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27462.

The product of its (nonzero) digits is 2332800, while the sum is 55.

The spelling of 20985089059 in words is "twenty billion, nine hundred eighty-five million, eighty-nine thousand, fifty-nine".