45831231665 has 4 divisors (see below), whose sum is σ = 54997478004. Its totient is φ = 36664985328.

The previous prime is 45831231659. The next prime is 45831231697. The reversal of 45831231665 is 56613213854.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25510158961 + 20321072704 = 159719^2 + 142552^2 .

It is a cyclic number.

It is not a de Polignac number, because 45831231665 - 2⁶ = 45831231601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4583123162 + ... + 4583123171.

It is an arithmetic number, because the mean of its divisors is an integer number (13749369501).

Almost surely, 2^45831231665 is an apocalyptic number.

It is an amenable number.

45831231665 is a deficient number, since it is larger than the sum of its proper divisors (9166246339).

45831231665 is an equidigital number, since it uses as much as digits as its factorization.

45831231665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9166246338.

The product of its digits is 518400, while the sum is 44.

The spelling of 45831231665 in words is "forty-five billion, eight hundred thirty-one million, two hundred thirty-one thousand, six hundred sixty-five".