6381326257511 has 8 divisors (see below), whose sum is σ = 6401423861520. Its totient is φ = 6361260230592.

The previous prime is 6381326257489. The next prime is 6381326257529. The reversal of 6381326257511 is 1157526231836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6381326257511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6381326257511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381326257211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7489430 + ... + 8297843.

It is an arithmetic number, because the mean of its divisors is an integer number (800177982690).

Almost surely, 2^{6381326257511} is an apocalyptic number.

6381326257511 is a deficient number, since it is larger than the sum of its proper divisors (20097604009).

6381326257511 is a wasteful number, since it uses less digits than its factorization.

6381326257511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15788545.

The product of its digits is 1814400, while the sum is 50.

The spelling of 6381326257511 in words is "six trillion, three hundred eighty-one billion, three hundred twenty-six million, two hundred fifty-seven thousand, five hundred eleven".