244636253044640 has 48 divisors (see below), whose sum is σ = 577962911084328. Its totient is φ = 97852848178176.

The previous prime is 244636253044639. The next prime is 244636253044657. The reversal of 244636253044640 is 46440352636442.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 115051452249616 + 129584800795024 = 10726204^2 + 11383532^2 .

It is a super-2 number, since 2×244636253044640² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3391427 + ... + 22377986.

Almost surely, 2^{244636253044640} is an apocalyptic number.

244636253044640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244636253044640 is an abundant number, since it is smaller than the sum of its proper divisors (333326658039688).

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

244636253044640 is a wasteful number, since it uses less digits than its factorization.

244636253044640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25828761 (or 25828753 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 53.

The spelling of 244636253044640 in words is "two hundred forty-four trillion, six hundred thirty-six billion, two hundred fifty-three million, forty-four thousand, six hundred forty".