13525121043 has 40 divisors (see below), whose sum is σ = 24094464768. Its totient is φ = 7392605616.

The previous prime is 13525121021. The next prime is 13525121059. The reversal of 13525121043 is 34012152531.

13525121043 is a `hidden beast` number, since 13 + 525 + 121 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 13525121043 - 2⁶ = 13525120979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13525120998 and 13525121016.

It is not an unprimeable number, because it can be changed into a prime (13525120043) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 505521 + ... + 531602.

Almost surely, 2^13525121043 is an apocalyptic number.

13525121043 is a deficient number, since it is larger than the sum of its proper divisors (10569343725).

13525121043 is a wasteful number, since it uses less digits than its factorization.

13525121043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037165 (or 1037156 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 13525121043 its reverse (34012152531), we get a palindrome (47537273574).

The spelling of 13525121043 in words is "thirteen billion, five hundred twenty-five million, one hundred twenty-one thousand, forty-three".