15131135445 has 16 divisors (see below), whose sum is σ = 24370150272. Its totient is φ = 8016494400.

The previous prime is 15131135441. The next prime is 15131135477. The reversal of 15131135445 is 54453113151.

It is a happy number.

It is not a de Polignac number, because 15131135445 - 2² = 15131135441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15131135441) 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 15 ways as a sum of consecutive naturals, for example, 3337942 + ... + 3342471.

It is an arithmetic number, because the mean of its divisors is an integer number (1523134392).

Almost surely, 2^15131135445 is an apocalyptic number.

15131135445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15131135445 is a deficient number, since it is larger than the sum of its proper divisors (9239014827).

15131135445 is a wasteful number, since it uses less digits than its factorization.

15131135445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680572.

The product of its digits is 18000, while the sum is 33.

Adding to 15131135445 its reverse (54453113151), we get a palindrome (69584248596).

The spelling of 15131135445 in words is "fifteen billion, one hundred thirty-one million, one hundred thirty-five thousand, four hundred forty-five".