453116521665 has 32 divisors (see below), whose sum is σ = 806519466240. Its totient is φ = 241368450048.

The previous prime is 453116521651. The next prime is 453116521687. The reversal of 453116521665 is 566125611354.

453116521665 is a `hidden beast` number, since 4 + 5 + 3 + 116 + 521 + 6 + 6 + 5 = 666.

It is not a de Polignac number, because 453116521665 - 2¹² = 453116517569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 453116521665.

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 in 31 ways as a sum of consecutive naturals, for example, 1928032 + ... + 2150241.

It is an arithmetic number, because the mean of its divisors is an integer number (25203733320).

Almost surely, 2^453116521665 is an apocalyptic number.

453116521665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

453116521665 is a deficient number, since it is larger than the sum of its proper divisors (353402944575).

453116521665 is a wasteful number, since it uses less digits than its factorization.

453116521665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079110 (or 4079104 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 453116521665 in words is "four hundred fifty-three billion, one hundred sixteen million, five hundred twenty-one thousand, six hundred sixty-five".