40444315221 has 16 divisors (see below), whose sum is σ = 54818519168. Its totient is φ = 26516635200.

The previous prime is 40444315217. The next prime is 40444315229. The reversal of 40444315221 is 12251344404.

40444315221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40444315221 - 2² = 40444315217 is a prime.

It is a super-2 number, since 2×40444315221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444315229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1481031 + ... + 1508091.

It is an arithmetic number, because the mean of its divisors is an integer number (3426157448).

Almost surely, 2^40444315221 is an apocalyptic number.

It is an amenable number.

40444315221 is a deficient number, since it is larger than the sum of its proper divisors (14374203947).

40444315221 is a wasteful number, since it uses less digits than its factorization.

40444315221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35292.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 40444315221 its reverse (12251344404), we get a palindrome (52695659625).

The spelling of 40444315221 in words is "forty billion, four hundred forty-four million, three hundred fifteen thousand, two hundred twenty-one".