13522172405 has 16 divisors (see below), whose sum is σ = 18548365440. Its totient is φ = 9270510912.

The previous prime is 13522172399. The next prime is 13522172471. The reversal of 13522172405 is 50427122531.

It is a cyclic number.

It is not a de Polignac number, because 13522172405 - 2⁶ = 13522172341 is a prime.

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, 154766 + ... + 225824.

It is an arithmetic number, because the mean of its divisors is an integer number (1159272840).

Almost surely, 2^13522172405 is an apocalyptic number.

It is an amenable number.

13522172405 is a deficient number, since it is larger than the sum of its proper divisors (5026193035).

13522172405 is an equidigital number, since it uses as much as digits as its factorization.

13522172405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76508.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 13522172405 its reverse (50427122531), we get a palindrome (63949294936).

The spelling of 13522172405 in words is "thirteen billion, five hundred twenty-two million, one hundred seventy-two thousand, four hundred five".