444354421630 has 64 divisors (see below), whose sum is σ = 976750980480. Its totient is φ = 142072786944.

The previous prime is 444354421607. The next prime is 444354421633. The reversal of 444354421630 is 36124453444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444354421633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1583167 + ... + 1842586.

It is an arithmetic number, because the mean of its divisors is an integer number (15261734070).

Almost surely, 2^444354421630 is an apocalyptic number.

444354421630 is an abundant number, since it is smaller than the sum of its proper divisors (532396558850).

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

444354421630 is a wasteful number, since it uses less digits than its factorization.

444354421630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425893.

The product of its (nonzero) digits is 552960, while the sum is 40.

The spelling of 444354421630 in words is "four hundred forty-four billion, three hundred fifty-four million, four hundred twenty-one thousand, six hundred thirty".