20411023240415 has 16 divisors (see below), whose sum is σ = 24553727946720. Its totient is φ = 16288491711360.

The previous prime is 20411023240409. The next prime is 20411023240477. The reversal of 20411023240415 is 51404232011402.

It is a happy number.

It is not a de Polignac number, because 20411023240415 - 2¹⁶ = 20411023174879 is a prime.

It is a super-2 number, since 2×20411023240415² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25153325 + ... + 25952105.

It is an arithmetic number, because the mean of its divisors is an integer number (1534607996670).

Almost surely, 2^{20411023240415} is an apocalyptic number.

20411023240415 is a deficient number, since it is larger than the sum of its proper divisors (4142704706305).

20411023240415 is a wasteful number, since it uses less digits than its factorization.

20411023240415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811402.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 20411023240415 its reverse (51404232011402), we get a palindrome (71815255251817).

The spelling of 20411023240415 in words is "twenty trillion, four hundred eleven billion, twenty-three million, two hundred forty thousand, four hundred fifteen".