244136666420 has 48 divisors (see below), whose sum is σ = 515692956240. Its totient is φ = 97083377664.

The previous prime is 244136666393. The next prime is 244136666437. The reversal of 244136666420 is 24666631442.

It can be written as a sum of positive squares in 8 ways, for example, as 19936310416 + 224200356004 = 141196^2 + 473498^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3061292 + ... + 3140028.

It is an arithmetic number, because the mean of its divisors is an integer number (10743603255).

Almost surely, 2^244136666420 is an apocalyptic number.

244136666420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244136666420 is an abundant number, since it is smaller than the sum of its proper divisors (271556289820).

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

244136666420 is a wasteful number, since it uses less digits than its factorization.

244136666420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79652 (or 79650 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 244136666420 in words is "two hundred forty-four billion, one hundred thirty-six million, six hundred sixty-six thousand, four hundred twenty".