444681420415420 has 24 divisors (see below), whose sum is σ = 949658626652400. Its totient is φ = 174857778874752.

The previous prime is 444681420415367. The next prime is 444681420415481. The reversal of 444681420415420 is 24514024186444.

It is a super-2 number, since 2×444681420415420² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188424329505 + ... + 188424331864.

It is an arithmetic number, because the mean of its divisors is an integer number (39569109443850).

Almost surely, 2^{444681420415420} is an apocalyptic number.

It is an amenable number.

444681420415420 is an abundant number, since it is smaller than the sum of its proper divisors (504977206236980).

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

444681420415420 is a wasteful number, since it uses less digits than its factorization.

444681420415420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376848661437 (or 376848661435 counting only the distinct ones).

The product of its (nonzero) digits is 3932160, while the sum is 49.

The spelling of 444681420415420 in words is "four hundred forty-four trillion, six hundred eighty-one billion, four hundred twenty million, four hundred fifteen thousand, four hundred twenty".