244721004660 has 144 divisors (see below), whose sum is σ = 810439785792. Its totient is φ = 59279731200.

The previous prime is 244721004643. The next prime is 244721004673. The reversal of 244721004660 is 66400127442.

244721004660 is a `hidden beast` number, since 24 + 4 + 72 + 100 + 466 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 2508312 + ... + 2604048.

It is an arithmetic number, because the mean of its divisors is an integer number (5628054068).

Almost surely, 2^244721004660 is an apocalyptic number.

244721004660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 244721004660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405219892896).

244721004660 is an abundant number, since it is smaller than the sum of its proper divisors (565718781132).

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

244721004660 is a wasteful number, since it uses less digits than its factorization.

244721004660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97054 (or 97049 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 244721004660 in words is "two hundred forty-four billion, seven hundred twenty-one million, four thousand, six hundred sixty".