381330722766 has 64 divisors (see below), whose sum is σ = 909633494016. Its totient is φ = 104200377600.

The previous prime is 381330722761. The next prime is 381330722777. The reversal of 381330722766 is 667227033183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381330722761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8421226 + ... + 8466386.

It is an arithmetic number, because the mean of its divisors is an integer number (14213023344).

Almost surely, 2^381330722766 is an apocalyptic number.

381330722766 is an abundant number, since it is smaller than the sum of its proper divisors (528302771250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381330722766 is a wasteful number, since it uses less digits than its factorization.

381330722766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53937.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The spelling of 381330722766 in words is "three hundred eighty-one billion, three hundred thirty million, seven hundred twenty-two thousand, seven hundred sixty-six".