451215565116 has 24 divisors (see below), whose sum is σ = 1056932965200. Its totient is φ = 149819953152.

The previous prime is 451215565057. The next prime is 451215565123. The reversal of 451215565116 is 611565512154.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73151191 + ... + 73157358.

It is an arithmetic number, because the mean of its divisors is an integer number (44038873550).

Almost surely, 2^451215565116 is an apocalyptic number.

It is an amenable number.

451215565116 is an abundant number, since it is smaller than the sum of its proper divisors (605717400084).

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

451215565116 is a wasteful number, since it uses less digits than its factorization.

451215565116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146308813 (or 146308811 counting only the distinct ones).

The product of its digits is 180000, while the sum is 42.

The spelling of 451215565116 in words is "four hundred fifty-one billion, two hundred fifteen million, five hundred sixty-five thousand, one hundred sixteen".