44001311440 has 20 divisors (see below), whose sum is σ = 102303049284. Its totient is φ = 17600524544.

The previous prime is 44001311411. The next prime is 44001311461. The reversal of 44001311440 is 4411310044.

It can be written as a sum of positive squares in 2 ways, for example, as 7232481936 + 36768829504 = 85044^2 + 191752^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×44001311440² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275008117 + ... + 275008276.

Almost surely, 2^44001311440 is an apocalyptic number.

44001311440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44001311440 is an abundant number, since it is smaller than the sum of its proper divisors (58301737844).

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

44001311440 is a wasteful number, since it uses less digits than its factorization.

44001311440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550016406 (or 550016400 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 44001311440 its reverse (4411310044), we get a palindrome (48412621484).

The spelling of 44001311440 in words is "forty-four billion, one million, three hundred eleven thousand, four hundred forty".