381777105599 has 4 divisors (see below), whose sum is σ = 382209470136. Its totient is φ = 381344741064.

The previous prime is 381777105581. The next prime is 381777105601. The reversal of 381777105599 is 995501777183.

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

It is a cyclic number.

It is not a de Polignac number, because 381777105599 - 2⁸ = 381777105343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381777105509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216180944 + ... + 216182709.

It is an arithmetic number, because the mean of its divisors is an integer number (95552367534).

Almost surely, 2^381777105599 is an apocalyptic number.

381777105599 is a deficient number, since it is larger than the sum of its proper divisors (432364537).

381777105599 is an equidigital number, since it uses as much as digits as its factorization.

381777105599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432364536.

The product of its (nonzero) digits is 16669800, while the sum is 62.

The spelling of 381777105599 in words is "three hundred eighty-one billion, seven hundred seventy-seven million, one hundred five thousand, five hundred ninety-nine".