445425424420 has 24 divisors (see below), whose sum is σ = 935410211064. Its totient is φ = 178166966016.

The previous prime is 445425424373. The next prime is 445425424441. The reversal of 445425424420 is 24424524544.

It can be written as a sum of positive squares in 4 ways, for example, as 49882542336 + 395542882084 = 223344^2 + 628922^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167792 + ... + 1501528.

It is an arithmetic number, because the mean of its divisors is an integer number (38975425461).

Almost surely, 2^445425424420 is an apocalyptic number.

It is an amenable number.

445425424420 is an abundant number, since it is smaller than the sum of its proper divisors (489984786644).

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

445425424420 is a wasteful number, since it uses less digits than its factorization.

445425424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400479 (or 400477 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 40.

Adding to 445425424420 its reverse (24424524544), we get a palindrome (469849948964).

The spelling of 445425424420 in words is "four hundred forty-five billion, four hundred twenty-five million, four hundred twenty-four thousand, four hundred twenty".