6361317521 has 16 divisors (see below), whose sum is σ = 7144585728. Its totient is φ = 5623948800.

The previous prime is 6361317517. The next prime is 6361317563. The reversal of 6361317521 is 1257131636.

It is a cyclic number.

It is not a de Polignac number, because 6361317521 - 2² = 6361317517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6361317821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42275 + ... + 120456.

It is an arithmetic number, because the mean of its divisors is an integer number (446536608).

Almost surely, 2^6361317521 is an apocalyptic number.

It is an amenable number.

6361317521 is a deficient number, since it is larger than the sum of its proper divisors (783268207).

6361317521 is a wasteful number, since it uses less digits than its factorization.

6361317521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162872.

The product of its digits is 22680, while the sum is 35.

The square root of 6361317521 is about 79757.8680820896. The cubic root of 6361317521 is about 1852.8873851101.

The spelling of 6361317521 in words is "six billion, three hundred sixty-one million, three hundred seventeen thousand, five hundred twenty-one".