40444311133 has 8 divisors (see below), whose sum is σ = 41473204920. Its totient is φ = 39417438720.

The previous prime is 40444311121. The next prime is 40444311137. The reversal of 40444311133 is 33111344404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 134513604 + 40309797529 = 11598^2 + 200773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40444311133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444311137) 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, 464778 + ... + 544891.

It is an arithmetic number, because the mean of its divisors is an integer number (5184150615).

Almost surely, 2^40444311133 is an apocalyptic number.

It is an amenable number.

40444311133 is a deficient number, since it is larger than the sum of its proper divisors (1028893787).

40444311133 is a wasteful number, since it uses less digits than its factorization.

40444311133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010687.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 40444311133 its reverse (33111344404), we get a palindrome (73555655537).

The spelling of 40444311133 in words is "forty billion, four hundred forty-four million, three hundred eleven thousand, one hundred thirty-three".