381166322699 has 16 divisors (see below), whose sum is σ = 411496187904. Its totient is φ = 352036027200.

The previous prime is 381166322651. The next prime is 381166322707. The reversal of 381166322699 is 996223661183.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381166322699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381166322599) by changing a digit.

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, 287522 + ... + 919239.

It is an arithmetic number, because the mean of its divisors is an integer number (25718511744).

Almost surely, 2^381166322699 is an apocalyptic number.

381166322699 is a deficient number, since it is larger than the sum of its proper divisors (30329865205).

381166322699 is a wasteful number, since it uses less digits than its factorization.

381166322699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207258.

The product of its digits is 5038848, while the sum is 56.

The spelling of 381166322699 in words is "three hundred eighty-one billion, one hundred sixty-six million, three hundred twenty-two thousand, six hundred ninety-nine".