15056131643 has 24 divisors (see below), whose sum is σ = 17718753696. Its totient is φ = 12525004800.

The previous prime is 15056131633. The next prime is 15056131747. The reversal of 15056131643 is 34613165051.

15056131643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15056131643 - 2¹⁴ = 15056115259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15056131603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35762573 + ... + 35762993.

It is an arithmetic number, because the mean of its divisors is an integer number (738281404).

Almost surely, 2^15056131643 is an apocalyptic number.

15056131643 is a deficient number, since it is larger than the sum of its proper divisors (2662622053).

15056131643 is an frugal number, since it uses more digits than its factorization.

15056131643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 15056131643 its reverse (34613165051), we get a palindrome (49669296694).

The spelling of 15056131643 in words is "fifteen billion, fifty-six million, one hundred thirty-one thousand, six hundred forty-three".