41256544565213 has 24 divisors (see below), whose sum is σ = 42070864252536. Its totient is φ = 40457632550400.

The previous prime is 41256544565161. The next prime is 41256544565219. The reversal of 41256544565213 is 31256544565214.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 580441325689 + 40676103239524 = 761867^2 + 6377782^2 .

It is not a de Polignac number, because 41256544565213 - 2³⁰ = 41255470823389 is a prime.

It is a super-2 number, since 2×41256544565213² (a number of 28 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 (41256544565219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4136818895 + ... + 4136828867.

It is an arithmetic number, because the mean of its divisors is an integer number (1752952677189).

Almost surely, 2^{41256544565213} is an apocalyptic number.

It is an amenable number.

41256544565213 is a deficient number, since it is larger than the sum of its proper divisors (814319687323).

41256544565213 is an equidigital number, since it uses as much as digits as its factorization.

41256544565213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12893 (or 12834 counting only the distinct ones).

The product of its digits is 17280000, while the sum is 53.

Subtracting from 41256544565213 its reverse (31256544565214), we obtain a palindrome (9999999999999).

The spelling of 41256544565213 in words is "forty-one trillion, two hundred fifty-six billion, five hundred forty-four million, five hundred sixty-five thousand, two hundred thirteen".