160621710561 has 40 divisors (see below), whose sum is σ = 258566468160. Its totient is φ = 98779717728.

The previous prime is 160621710539. The next prime is 160621710563. The reversal of 160621710561 is 165017126061.

It is a happy number.

160621710561 is a `hidden beast` number, since 1 + 6 + 0 + 6 + 21 + 71 + 0 + 561 = 666.

160621710561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 160621710561 - 2⁶ = 160621710497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (160621710563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1592706 + ... + 1690548.

It is an arithmetic number, because the mean of its divisors is an integer number (6464161704).

Almost surely, 2^160621710561 is an apocalyptic number.

It is an amenable number.

160621710561 is a deficient number, since it is larger than the sum of its proper divisors (97944757599).

160621710561 is a wasteful number, since it uses less digits than its factorization.

160621710561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99427 (or 99418 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 160621710561 in words is "one hundred sixty billion, six hundred twenty-one million, seven hundred ten thousand, five hundred sixty-one".