381166322701 has 8 divisors (see below), whose sum is σ = 387460945208. Its totient is φ = 374873184000.

The previous prime is 381166322651. The next prime is 381166322707. The reversal of 381166322701 is 107223661183.

It can be written as a sum of positive squares in 4 ways, for example, as 33478020900 + 347688301801 = 182970^2 + 589651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381166322701 - 2⁷ = 381166322573 is a prime.

It is a super-2 number, since 2×381166322701² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381166322707) 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 7 ways as a sum of consecutive naturals, for example, 153121 + ... + 886441.

It is an arithmetic number, because the mean of its divisors is an integer number (48432618151).

Almost surely, 2^381166322701 is an apocalyptic number.

It is an amenable number.

381166322701 is a deficient number, since it is larger than the sum of its proper divisors (6294622507).

381166322701 is an equidigital number, since it uses as much as digits as its factorization.

381166322701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741903.

The product of its (nonzero) digits is 72576, while the sum is 40.

Adding to 381166322701 its reverse (107223661183), we get a palindrome (488389983884).

The spelling of 381166322701 in words is "three hundred eighty-one billion, one hundred sixty-six million, three hundred twenty-two thousand, seven hundred one".