381330722785 has 4 divisors (see below), whose sum is σ = 457596867348. Its totient is φ = 305064578224.

The previous prime is 381330722777. The next prime is 381330722791. The reversal of 381330722785 is 587227033183.

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

It can be written as a sum of positive squares in 2 ways, for example, as 298929001536 + 82401721249 = 546744^2 + 287057^2 .

It is a cyclic number.

It is not a de Polignac number, because 381330722785 - 2³ = 381330722777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38133072274 + ... + 38133072283.

It is an arithmetic number, because the mean of its divisors is an integer number (114399216837).

Almost surely, 2^381330722785 is an apocalyptic number.

It is an amenable number.

381330722785 is a deficient number, since it is larger than the sum of its proper divisors (76266144563).

381330722785 is an equidigital number, since it uses as much as digits as its factorization.

381330722785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76266144562.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 381330722785 in words is "three hundred eighty-one billion, three hundred thirty million, seven hundred twenty-two thousand, seven hundred eighty-five".