13511220445 has 16 divisors (see below), whose sum is σ = 16264324800. Its totient is φ = 10775116800.

The previous prime is 13511220433. The next prime is 13511220479. The reversal of 13511220445 is 54402211531.

It is a de Polignac number, because none of the positive numbers 2^k-13511220445 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 3435130 + ... + 3439060.

It is an arithmetic number, because the mean of its divisors is an integer number (1016520300).

Almost surely, 2^13511220445 is an apocalyptic number.

It is an amenable number.

13511220445 is a deficient number, since it is larger than the sum of its proper divisors (2753104355).

13511220445 is a wasteful number, since it uses less digits than its factorization.

13511220445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 13511220445 its reverse (54402211531), we get a palindrome (67913431976).

The spelling of 13511220445 in words is "thirteen billion, five hundred eleven million, two hundred twenty thousand, four hundred forty-five".