451939434220 has 24 divisors (see below), whose sum is σ = 949575312000. Its totient is φ = 180680059392.

The previous prime is 451939434203. The next prime is 451939434223. The reversal of 451939434220 is 22434939154.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (451939434223) 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, 5943420 + ... + 6018979.

It is an arithmetic number, because the mean of its divisors is an integer number (39565638000).

Almost surely, 2^451939434220 is an apocalyptic number.

It is an amenable number.

451939434220 is an abundant number, since it is smaller than the sum of its proper divisors (497635877780).

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

451939434220 is a wasteful number, since it uses less digits than its factorization.

451939434220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11964297 (or 11964295 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 451939434220 in words is "four hundred fifty-one billion, nine hundred thirty-nine million, four hundred thirty-four thousand, two hundred twenty".