381288122585 has 16 divisors (see below), whose sum is σ = 459322779600. Its totient is φ = 303846187776.

The previous prime is 381288122543. The next prime is 381288122623. The reversal of 381288122585 is 585221882183.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 169272999184 + 212015123401 = 411428^2 + 460451^2 .

It is a cyclic number.

It is not a de Polignac number, because 381288122585 - 2⁸ = 381288122329 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9541667 + ... + 9581543.

It is an arithmetic number, because the mean of its divisors is an integer number (28707673725).

Almost surely, 2^381288122585 is an apocalyptic number.

It is an amenable number.

381288122585 is a deficient number, since it is larger than the sum of its proper divisors (78034657015).

381288122585 is a wasteful number, since it uses less digits than its factorization.

381288122585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47260.

The product of its digits is 2457600, while the sum is 53.

The spelling of 381288122585 in words is "three hundred eighty-one billion, two hundred eighty-eight million, one hundred twenty-two thousand, five hundred eighty-five".