16520013411 has 16 divisors (see below), whose sum is σ = 24168015360. Its totient is φ = 9954252320.

The previous prime is 16520013403. The next prime is 16520013431. The reversal of 16520013411 is 11431002561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16520013411 - 2³ = 16520013403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16520013431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1441131 + ... + 1452548.

It is an arithmetic number, because the mean of its divisors is an integer number (1510500960).

Almost surely, 2^16520013411 is an apocalyptic number.

16520013411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16520013411 is a deficient number, since it is larger than the sum of its proper divisors (7648001949).

16520013411 is a wasteful number, since it uses less digits than its factorization.

16520013411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893866.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 16520013411 its reverse (11431002561), we get a palindrome (27951015972).

The spelling of 16520013411 in words is "sixteen billion, five hundred twenty million, thirteen thousand, four hundred eleven".