453853984985 has 4 divisors (see below), whose sum is σ = 544624781988. Its totient is φ = 363083187984.

The previous prime is 453853984967. The next prime is 453853985023. The reversal of 453853984985 is 589489358354.

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 70796969929 + 383057015056 = 266077^2 + 618916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-453853984985 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, 45385398494 + ... + 45385398503.

It is an arithmetic number, because the mean of its divisors is an integer number (136156195497).

Almost surely, 2^453853984985 is an apocalyptic number.

It is an amenable number.

453853984985 is a deficient number, since it is larger than the sum of its proper divisors (90770797003).

453853984985 is an equidigital number, since it uses as much as digits as its factorization.

453853984985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90770797002.

The product of its digits is 746496000, while the sum is 71.

The spelling of 453853984985 in words is "four hundred fifty-three billion, eight hundred fifty-three million, nine hundred eighty-four thousand, nine hundred eighty-five".