381535323442511 has 8 divisors (see below), whose sum is σ = 436116374639520. Its totient is φ = 326973273493248.

The previous prime is 381535323442477. The next prime is 381535323442517. The reversal of 381535323442511 is 115244323535183.

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

It is a cyclic number.

It is not a de Polignac number, because 381535323442511 - 2¹⁸ = 381535323180367 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 381535323442511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381535323442517) 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, 4750268906 + ... + 4750349223.

It is an arithmetic number, because the mean of its divisors is an integer number (54514546829940).

Almost surely, 2^{381535323442511} is an apocalyptic number.

381535323442511 is a deficient number, since it is larger than the sum of its proper divisors (54581051197009).

381535323442511 is an equidigital number, since it uses as much as digits as its factorization.

381535323442511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9500623873.

The product of its digits is 5184000, while the sum is 50.

Adding to 381535323442511 its reverse (115244323535183), we get a palindrome (496779646977694).

The spelling of 381535323442511 in words is "three hundred eighty-one trillion, five hundred thirty-five billion, three hundred twenty-three million, four hundred forty-two thousand, five hundred eleven".