420664997744 has 40 divisors (see below), whose sum is σ = 842440507440. Its totient is φ = 203377881600.

The previous prime is 420664997743. The next prime is 420664997771. The reversal of 420664997744 is 447799466024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420664997743) 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, 3595037 + ... + 3710204.

It is an arithmetic number, because the mean of its divisors is an integer number (21061012686).

Almost surely, 2^420664997744 is an apocalyptic number.

It is an amenable number.

420664997744 is an abundant number, since it is smaller than the sum of its proper divisors (421775509696).

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

420664997744 is a wasteful number, since it uses less digits than its factorization.

420664997744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7305369 (or 7305363 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 62.

The spelling of 420664997744 in words is "four hundred twenty billion, six hundred sixty-four million, nine hundred ninety-seven thousand, seven hundred forty-four".