665381180883 has 32 divisors (see below), whose sum is σ = 915304658752. Its totient is φ = 429633331200.

The previous prime is 665381180851. The next prime is 665381180887. The reversal of 665381180883 is 388081183566.

It is not a de Polignac number, because 665381180883 - 2⁵ = 665381180851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665381180887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114304113 + ... + 114309933.

It is an arithmetic number, because the mean of its divisors is an integer number (28603270586).

Almost surely, 2^665381180883 is an apocalyptic number.

665381180883 is a deficient number, since it is larger than the sum of its proper divisors (249923477869).

665381180883 is a wasteful number, since it uses less digits than its factorization.

665381180883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10375.

The product of its (nonzero) digits is 6635520, while the sum is 57.

It can be divided in two parts, 66538 and 1180883, that added together give a palindrome (1247421).

The spelling of 665381180883 in words is "six hundred sixty-five billion, three hundred eighty-one million, one hundred eighty thousand, eight hundred eighty-three".