244153400440 has 32 divisors (see below), whose sum is σ = 553670714880. Its totient is φ = 96892371072.

The previous prime is 244153400423. The next prime is 244153400441. The reversal of 244153400440 is 44004351442.

It is a super-2 number, since 2×244153400440² (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 (244153400441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24025767 + ... + 24035926.

It is an arithmetic number, because the mean of its divisors is an integer number (17302209840).

Almost surely, 2^244153400440 is an apocalyptic number.

244153400440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244153400440 is an abundant number, since it is smaller than the sum of its proper divisors (309517314440).

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

244153400440 is a wasteful number, since it uses less digits than its factorization.

244153400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48061831 (or 48061827 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 244153400440 its reverse (44004351442), we get a palindrome (288157751882).

The spelling of 244153400440 in words is "two hundred forty-four billion, one hundred fifty-three million, four hundred thousand, four hundred forty".