13522621605 has 16 divisors (see below), whose sum is σ = 21639246144. Its totient is φ = 7211047680.

The previous prime is 13522621603. The next prime is 13522621669. The reversal of 13522621605 is 50612622531.

It is not a de Polignac number, because 13522621605 - 2¹ = 13522621603 is a prime.

It is a super-2 number, since 2×13522621605² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13522621603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53250 + ... + 172860.

It is an arithmetic number, because the mean of its divisors is an integer number (1352452884).

Almost surely, 2^13522621605 is an apocalyptic number.

13522621605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13522621605 is a deficient number, since it is larger than the sum of its proper divisors (8116624539).

13522621605 is a wasteful number, since it uses less digits than its factorization.

13522621605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127156.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 13522621605 in words is "thirteen billion, five hundred twenty-two million, six hundred twenty-one thousand, six hundred five".