41001440521 has 12 divisors (see below), whose sum is σ = 43083807508. Its totient is φ = 39015465984.

The previous prime is 41001440489. The next prime is 41001440549. The reversal of 41001440521 is 12504410014.

It can be written as a sum of positive squares in 2 ways, for example, as 25039897600 + 15961542921 = 158240^2 + 126339^2 .

It is not a de Polignac number, because 41001440521 - 2⁵ = 41001440489 is a prime.

It is a super-2 number, since 2×41001440521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 41001440492 and 41001440501.

It is not an unprimeable number, because it can be changed into a prime (41001440561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98700 + ... + 302893.

Almost surely, 2^41001440521 is an apocalyptic number.

It is an amenable number.

41001440521 is a deficient number, since it is larger than the sum of its proper divisors (2082366987).

41001440521 is a wasteful number, since it uses less digits than its factorization.

41001440521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401832 (or 401809 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 41001440521 its reverse (12504410014), we get a palindrome (53505850535).

The spelling of 41001440521 in words is "forty-one billion, one million, four hundred forty thousand, five hundred twenty-one".