453116521666 has 4 divisors (see below), whose sum is σ = 679674782502. Its totient is φ = 226558260832.

The previous prime is 453116521651. The next prime is 453116521687. The reversal of 453116521666 is 666125611354.

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 only one way, i.e., 431248323025 + 21868198641 = 656695^2 + 147879^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113279130415 + ... + 113279130418.

Almost surely, 2^453116521666 is an apocalyptic number.

453116521666 is a deficient number, since it is larger than the sum of its proper divisors (226558260836).

453116521666 is a wasteful number, since it uses less digits than its factorization.

453116521666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226558260835.

The product of its digits is 777600, while the sum is 46.

The spelling of 453116521666 in words is "four hundred fifty-three billion, one hundred sixteen million, five hundred twenty-one thousand, six hundred sixty-six".