452518616421 has 12 divisors (see below), whose sum is σ = 653643832140. Its totient is φ = 301676386560.

The previous prime is 452518616401. The next prime is 452518616423. The reversal of 452518616421 is 124616815254.

452518616421 is a `hidden beast` number, since 4 + 5 + 2 + 5 + 1 + 8 + 616 + 4 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 364731444900 + 87787171521 = 603930^2 + 296289^2 .

It is not a de Polignac number, because 452518616421 - 2⁶ = 452518616357 is a prime.

It is a super-2 number, since 2×452518616421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452518616423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1875445 + ... + 2102933.

It is an arithmetic number, because the mean of its divisors is an integer number (54470319345).

Almost surely, 2^452518616421 is an apocalyptic number.

It is an amenable number.

452518616421 is a deficient number, since it is larger than the sum of its proper divisors (201125215719).

452518616421 is a wasteful number, since it uses less digits than its factorization.

452518616421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448516 (or 448513 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The spelling of 452518616421 in words is "four hundred fifty-two billion, five hundred eighteen million, six hundred sixteen thousand, four hundred twenty-one".