13520011355 has 24 divisors (see below), whose sum is σ = 17357579712. Its totient is φ = 10106280576.

The previous prime is 13520011331. The next prime is 13520011357. The reversal of 13520011355 is 55311002531.

It is a happy number.

It is not a de Polignac number, because 13520011355 - 2¹⁶ = 13519945819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13520011357) 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, 80462 + ... + 183068.

It is an arithmetic number, because the mean of its divisors is an integer number (723232488).

Almost surely, 2^13520011355 is an apocalyptic number.

13520011355 is a deficient number, since it is larger than the sum of its proper divisors (3837568357).

13520011355 is a wasteful number, since it uses less digits than its factorization.

13520011355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102723 (or 102704 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 13520011355 its reverse (55311002531), we get a palindrome (68831013886).

The spelling of 13520011355 in words is "thirteen billion, five hundred twenty million, eleven thousand, three hundred fifty-five".