380442647871 has 24 divisors (see below), whose sum is σ = 645599647056. Its totient is φ = 212835047040.

The previous prime is 380442647867. The next prime is 380442647873. The reversal of 380442647871 is 178746244083.

380442647871 is a `hidden beast` number, since 3 + 8 + 0 + 442 + 64 + 78 + 71 = 666.

It is not a de Polignac number, because 380442647871 - 2² = 380442647867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380442647873) 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 23 ways as a sum of consecutive naturals, for example, 147800830 + ... + 147803403.

It is an arithmetic number, because the mean of its divisors is an integer number (26899985294).

Almost surely, 2^380442647871 is an apocalyptic number.

380442647871 is a deficient number, since it is larger than the sum of its proper divisors (265156999185).

380442647871 is a wasteful number, since it uses less digits than its factorization.

380442647871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295604263 (or 295604260 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 380442647871 in words is "three hundred eighty billion, four hundred forty-two million, six hundred forty-seven thousand, eight hundred seventy-one".