15541420313 has 4 divisors (see below), whose sum is σ = 15542760228. Its totient is φ = 15540080400.

The previous prime is 15541420303. The next prime is 15541420327. The reversal of 15541420313 is 31302414551.

15541420313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9842227264 + 5699193049 = 99208^2 + 75493^2 .

It is a cyclic number.

It is not a de Polignac number, because 15541420313 - 2⁸ = 15541420057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15541420303) 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 3 ways as a sum of consecutive naturals, for example, 652406 + ... + 675807.

It is an arithmetic number, because the mean of its divisors is an integer number (3885690057).

Almost surely, 2^15541420313 is an apocalyptic number.

It is an amenable number.

15541420313 is a deficient number, since it is larger than the sum of its proper divisors (1339915).

15541420313 is a wasteful number, since it uses less digits than its factorization.

15541420313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339914.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 15541420313 its reverse (31302414551), we get a palindrome (46843834864).

The spelling of 15541420313 in words is "fifteen billion, five hundred forty-one million, four hundred twenty thousand, three hundred thirteen".