660541431169 has 9 divisors (see below), whose sum is σ = 670034399041. Its totient is φ = 651181139140.

The previous prime is 660541431167. The next prime is 660541431191. The reversal of 660541431169 is 961134145066.

The square root of 660541431169 is 812737.

It is a perfect power (a square), and thus also a powerful number.

660541431169 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 660541431169 - 2¹ = 660541431167 is a prime.

It is a super-2 number, since 2×660541431169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660541431167) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 57698604 + ... + 57710050.

Almost surely, 2^660541431169 is an apocalyptic number.

660541431169 is the 812737-th square number.

660541431169 is the 406369-th centered octagonal number.

It is an amenable number.

660541431169 is a deficient number, since it is larger than the sum of its proper divisors (9492967872).

660541431169 is an frugal number, since it uses more digits than its factorization.

660541431169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23036 (or 11518 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 660541431169 in words is "six hundred sixty billion, five hundred forty-one million, four hundred thirty-one thousand, one hundred sixty-nine".