13531645245 has 16 divisors (see below), whose sum is σ = 22790139840. Its totient is φ = 6837041664.

The previous prime is 13531645243. The next prime is 13531645247. The reversal of 13531645245 is 54254613531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13531645243) and next prime (13531645247).

It is not a de Polignac number, because 13531645245 - 2¹ = 13531645243 is a prime.

It is a super-2 number, since 2×13531645245² (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 (13531645241) 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, 23739444 + ... + 23740013.

It is an arithmetic number, because the mean of its divisors is an integer number (1424383740).

Almost surely, 2^13531645245 is an apocalyptic number.

13531645245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13531645245 is a deficient number, since it is larger than the sum of its proper divisors (9258494595).

13531645245 is a wasteful number, since it uses less digits than its factorization.

13531645245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47479484.

The product of its digits is 216000, while the sum is 39.

The spelling of 13531645245 in words is "thirteen billion, five hundred thirty-one million, six hundred forty-five thousand, two hundred forty-five".