20115035411 has 4 divisors (see below), whose sum is σ = 20989602192. Its totient is φ = 19240468632.

The previous prime is 20115035407. The next prime is 20115035429. The reversal of 20115035411 is 11453051102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11453051102 = 2 ⋅5726525551.

It is a cyclic number.

It is not a de Polignac number, because 20115035411 - 2² = 20115035407 is a prime.

It is a super-2 number, since 2×20115035411² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 874566757 = 20115035411 / (2 + 0 + 1 + 1 + 5 + 0 + 3 + 5 + 4 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20115035401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437283356 + ... + 437283401.

It is an arithmetic number, because the mean of its divisors is an integer number (5247400548).

Almost surely, 2^20115035411 is an apocalyptic number.

20115035411 is a deficient number, since it is larger than the sum of its proper divisors (874566781).

20115035411 is an equidigital number, since it uses as much as digits as its factorization.

20115035411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874566780.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 20115035411 its reverse (11453051102), we get a palindrome (31568086513).

The spelling of 20115035411 in words is "twenty billion, one hundred fifteen million, thirty-five thousand, four hundred eleven".