20383516885 has 32 divisors (see below), whose sum is σ = 26026583040. Its totient is φ = 15272260608.

The previous prime is 20383516823. The next prime is 20383516889. The reversal of 20383516885 is 58861538302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20383516885 - 2¹⁵ = 20383484117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20383516889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27807979 + ... + 27808711.

It is an arithmetic number, because the mean of its divisors is an integer number (813330720).

Almost surely, 2^20383516885 is an apocalyptic number.

It is an amenable number.

20383516885 is a deficient number, since it is larger than the sum of its proper divisors (5643066155).

20383516885 is a wasteful number, since it uses less digits than its factorization.

20383516885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 20383516885 in words is "twenty billion, three hundred eighty-three million, five hundred sixteen thousand, eight hundred eighty-five".