13521205055 has 16 divisors (see below), whose sum is σ = 16950657024. Its totient is φ = 10341899040.

The previous prime is 13521205037. The next prime is 13521205067. The reversal of 13521205055 is 55050212531.

It is not a de Polignac number, because 13521205055 - 2¹⁶ = 13521139519 is a prime.

It is a super-2 number, since 2×13521205055² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512639 + ... + 538368.

It is an arithmetic number, because the mean of its divisors is an integer number (1059416064).

Almost surely, 2^13521205055 is an apocalyptic number.

13521205055 is a deficient number, since it is larger than the sum of its proper divisors (3429451969).

13521205055 is a wasteful number, since it uses less digits than its factorization.

13521205055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051126.

The product of its (nonzero) digits is 7500, while the sum is 29.

Adding to 13521205055 its reverse (55050212531), we get a palindrome (68571417586).

The spelling of 13521205055 in words is "thirteen billion, five hundred twenty-one million, two hundred five thousand, fifty-five".