201561512160 has 96 divisors (see below), whose sum is σ = 668335570560. Its totient is φ = 50920800768.

The previous prime is 201561512143. The next prime is 201561512171. The reversal of 201561512160 is 61215165102.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11041402 + ... + 11059641.

It is an arithmetic number, because the mean of its divisors is an integer number (6961828860).

Almost surely, 2^201561512160 is an apocalyptic number.

201561512160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201561512160 is an abundant number, since it is smaller than the sum of its proper divisors (466774058400).

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

201561512160 is a wasteful number, since it uses less digits than its factorization.

201561512160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22101080 (or 22101072 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 201561512160 its reverse (61215165102), we get a palindrome (262776677262).

The spelling of 201561512160 in words is "two hundred one billion, five hundred sixty-one million, five hundred twelve thousand, one hundred sixty".