453215956518 has 144 divisors (see below), whose sum is σ = 1080457297920. Its totient is φ = 137215031616.

The previous prime is 453215956517. The next prime is 453215956631. The reversal of 453215956518 is 815659512354.

453215956518 is a `hidden beast` number, since 4 + 5 + 3 + 21 + 59 + 56 + 518 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453215956517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 73774555 + ... + 73780697.

It is an arithmetic number, because the mean of its divisors is an integer number (7503175680).

Almost surely, 2^453215956518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 453215956518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540228648960).

453215956518 is an abundant number, since it is smaller than the sum of its proper divisors (627241341402).

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

453215956518 is a wasteful number, since it uses less digits than its factorization.

453215956518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563 (or 6547 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 54.

The spelling of 453215956518 in words is "four hundred fifty-three billion, two hundred fifteen million, nine hundred fifty-six thousand, five hundred eighteen".