15500052313 has 6 divisors (see below), whose sum is σ = 16358781354. Its totient is φ = 14684259744.

The previous prime is 15500052307. The next prime is 15500052329. The reversal of 15500052313 is 31325000551.

15500052313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13979988169 + 1520064144 = 118237^2 + 38988^2 .

It is a de Polignac number, because none of the positive numbers 2^k-15500052313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15500002313) 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 5 ways as a sum of consecutive naturals, for example, 21467856 + ... + 21468577.

It is an arithmetic number, because the mean of its divisors is an integer number (2726463559).

Almost surely, 2^15500052313 is an apocalyptic number.

It is an amenable number.

15500052313 is a deficient number, since it is larger than the sum of its proper divisors (858729041).

15500052313 is an equidigital number, since it uses as much as digits as its factorization.

15500052313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42936471 (or 42936452 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 15500052313 its reverse (31325000551), we get a palindrome (46825052864).

The spelling of 15500052313 in words is "fifteen billion, five hundred million, fifty-two thousand, three hundred thirteen".