13531201145 has 32 divisors (see below), whose sum is σ = 20252042496. Its totient is φ = 8431718400.

The previous prime is 13531201141. The next prime is 13531201213. The reversal of 13531201145 is 54110213531.

It is not a de Polignac number, because 13531201145 - 2² = 13531201141 is a prime.

It is a super-2 number, since 2×13531201145² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13531201141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1288757 + ... + 1299213.

It is an arithmetic number, because the mean of its divisors is an integer number (632876328).

Almost surely, 2^13531201145 is an apocalyptic number.

It is an amenable number.

13531201145 is a deficient number, since it is larger than the sum of its proper divisors (6720841351).

13531201145 is a wasteful number, since it uses less digits than its factorization.

13531201145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13841.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 13531201145 its reverse (54110213531), we get a palindrome (67641414676).

The spelling of 13531201145 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, one hundred forty-five".