665671160671 has 24 divisors (see below), whose sum is σ = 771060400992. Its totient is φ = 573113112000.

The previous prime is 665671160659. The next prime is 665671160677. The reversal of 665671160671 is 176061176566.

It is not a de Polignac number, because 665671160671 - 2⁷ = 665671160543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665671160677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 903036 + ... + 1465201.

It is an arithmetic number, because the mean of its divisors is an integer number (32127516708).

Almost surely, 2^665671160671 is an apocalyptic number.

665671160671 is a deficient number, since it is larger than the sum of its proper divisors (105389240321).

665671160671 is a wasteful number, since it uses less digits than its factorization.

665671160671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368383 (or 2368372 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 665671160671 in words is "six hundred sixty-five billion, six hundred seventy-one million, one hundred sixty thousand, six hundred seventy-one".