11331252513 has 32 divisors (see below), whose sum is σ = 19593400320. Its totient is φ = 6337230480.

The previous prime is 11331252511. The next prime is 11331252521. The reversal of 11331252513 is 31525213311.

11331252513 is a `hidden beast` number, since 1 + 133 + 1 + 2 + 525 + 1 + 3 = 666.

It is not a de Polignac number, because 11331252513 - 2¹ = 11331252511 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (11331252511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 628923 + ... + 646688.

It is an arithmetic number, because the mean of its divisors is an integer number (612293760).

Almost surely, 2^11331252513 is an apocalyptic number.

It is an amenable number.

11331252513 is a deficient number, since it is larger than the sum of its proper divisors (8262147807).

11331252513 is a wasteful number, since it uses less digits than its factorization.

11331252513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275674 (or 1275668 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

Adding to 11331252513 its reverse (31525213311), we get a palindrome (42856465824).

The spelling of 11331252513 in words is "eleven billion, three hundred thirty-one million, two hundred fifty-two thousand, five hundred thirteen".