5455431666 has 24 divisors (see below), whose sum is σ = 12013876524. Its totient is φ = 1788665760.

The previous prime is 5455431661. The next prime is 5455431673. The reversal of 5455431666 is 6661345545.

It can be written as a sum of positive squares in 2 ways, for example, as 4452759441 + 1002672225 = 66729^2 + 31665^2 .

It is not an unprimeable number, because it can be changed into a prime (5455431661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2483161 + ... + 2485356.

Almost surely, 2^5455431666 is an apocalyptic number.

5455431666 is an abundant number, since it is smaller than the sum of its proper divisors (6558444858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5455431666 is a wasteful number, since it uses less digits than its factorization.

5455431666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968586 (or 4968583 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The square root of 5455431666 is about 73860.8940238337. The cubic root of 5455431666 is about 1760.3932990280.

The spelling of 5455431666 in words is "five billion, four hundred fifty-five million, four hundred thirty-one thousand, six hundred sixty-six".