381612711809 has 16 divisors (see below), whose sum is σ = 462724016256. Its totient is φ = 307228588800.

The previous prime is 381612711791. The next prime is 381612711829. The reversal of 381612711809 is 908117216183.

It is a de Polignac number, because none of the positive numbers 2^k-381612711809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381612711829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3207182 + ... + 3324039.

It is an arithmetic number, because the mean of its divisors is an integer number (28920251016).

Almost surely, 2^381612711809 is an apocalyptic number.

It is an amenable number.

381612711809 is a deficient number, since it is larger than the sum of its proper divisors (81111304447).

381612711809 is a wasteful number, since it uses less digits than its factorization.

381612711809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6531736.

The product of its (nonzero) digits is 145152, while the sum is 47.

The spelling of 381612711809 in words is "three hundred eighty-one billion, six hundred twelve million, seven hundred eleven thousand, eight hundred nine".