201989518560 has 120 divisors (see below), whose sum is σ = 712854721656. Its totient is φ = 53863868160.

The previous prime is 201989518553. The next prime is 201989518583. The reversal of 201989518560 is 65815989102.

201989518560 is a `hidden beast` number, since 20 + 1 + 9 + 8 + 9 + 51 + 8 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 201989518497 and 201989518506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7779846 + ... + 7805765.

Almost surely, 2^201989518560 is an apocalyptic number.

201989518560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201989518560 is an abundant number, since it is smaller than the sum of its proper divisors (510865203096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201989518560 is a wasteful number, since it uses less digits than its factorization.

201989518560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15585638 (or 15585621 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 54.

The spelling of 201989518560 in words is "two hundred one billion, nine hundred eighty-nine million, five hundred eighteen thousand, five hundred sixty".