244113320781 has 192 divisors, whose sum is σ = 421132787712. Its totient is φ = 141134400000.

The previous prime is 244113320777. The next prime is 244113320797. The reversal of 244113320781 is 187023311442.

244113320781 is a `hidden beast` number, since 2 + 4 + 411 + 33 + 207 + 8 + 1 = 666.

It is not a de Polignac number, because 244113320781 - 2² = 244113320777 is a prime.

It is a super-2 number, since 2×244113320781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244113320701) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 972562906 + ... + 972563156.

It is an arithmetic number, because the mean of its divisors is an integer number (2193399936).

Almost surely, 2^244113320781 is an apocalyptic number.

It is an amenable number.

244113320781 is a deficient number, since it is larger than the sum of its proper divisors (177019466931).

244113320781 is an equidigital number, since it uses as much as digits as its factorization.

244113320781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 244113320781 in words is "two hundred forty-four billion, one hundred thirteen million, three hundred twenty thousand, seven hundred eighty-one".