444231651620 has 12 divisors (see below), whose sum is σ = 932886468444. Its totient is φ = 177692660640.

The previous prime is 444231651601. The next prime is 444231651637. The reversal of 444231651620 is 26156132444.

It can be written as a sum of positive squares in 2 ways, for example, as 232329784036 + 211901867584 = 482006^2 + 460328^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11105791271 + ... + 11105791310.

It is an arithmetic number, because the mean of its divisors is an integer number (77740539037).

Almost surely, 2^444231651620 is an apocalyptic number.

It is an amenable number.

444231651620 is an abundant number, since it is smaller than the sum of its proper divisors (488654816824).

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

444231651620 is a wasteful number, since it uses less digits than its factorization.

444231651620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22211582590 (or 22211582588 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 444231651620 in words is "four hundred forty-four billion, two hundred thirty-one million, six hundred fifty-one thousand, six hundred twenty".