451206846520 has 32 divisors (see below), whose sum is σ = 1025267051520. Its totient is φ = 178695779200.

The previous prime is 451206846509. The next prime is 451206846521. The reversal of 451206846520 is 25648602154.

It is a super-2 number, since 2×451206846520² (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 (451206846521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55838392 + ... + 55846471.

It is an arithmetic number, because the mean of its divisors is an integer number (32039595360).

Almost surely, 2^451206846520 is an apocalyptic number.

451206846520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451206846520 is an abundant number, since it is smaller than the sum of its proper divisors (574060205000).

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

451206846520 is a wasteful number, since it uses less digits than its factorization.

451206846520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111684975 (or 111684971 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 451206846520 in words is "four hundred fifty-one billion, two hundred six million, eight hundred forty-six thousand, five hundred twenty".