451780748016 has 120 divisors (see below), whose sum is σ = 1266711644016. Its totient is φ = 138687344640.

The previous prime is 451780748009. The next prime is 451780748039. The reversal of 451780748016 is 610847087154.

It is a self number, because there is not a number n which added to its sum of digits gives 451780748016.

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 23 ways as a sum of consecutive naturals, for example, 3448186 + ... + 3576806.

Almost surely, 2^451780748016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451780748016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633355822008).

451780748016 is an abundant number, since it is smaller than the sum of its proper divisors (814930896000).

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

451780748016 is a wasteful number, since it uses less digits than its factorization.

451780748016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129091 (or 129072 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 451780748016 in words is "four hundred fifty-one billion, seven hundred eighty million, seven hundred forty-eight thousand, sixteen".