20160261565144 has 32 divisors (see below), whose sum is σ = 39586387194720. Its totient is φ = 9607056028416.

The previous prime is 20160261565133. The next prime is 20160261565187. The reversal of 20160261565144 is 44156516206102.

It is a super-2 number, since 2×20160261565144² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20160261565144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197722749 + ... + 197824684.

It is an arithmetic number, because the mean of its divisors is an integer number (1237074599835).

Almost surely, 2^{20160261565144} is an apocalyptic number.

It is an amenable number.

20160261565144 is a deficient number, since it is larger than the sum of its proper divisors (19426125629576).

20160261565144 is a wasteful number, since it uses less digits than its factorization.

20160261565144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395547739 (or 395547735 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 20160261565144 in words is "twenty trillion, one hundred sixty billion, two hundred sixty-one million, five hundred sixty-five thousand, one hundred forty-four".