381006015966 has 48 divisors (see below), whose sum is σ = 843586009344. Its totient is φ = 124224810192.

The previous prime is 381006015853. The next prime is 381006015997. The reversal of 381006015966 is 669510600183.

381006015966 is a `hidden beast` number, since 38 + 1 + 0 + 0 + 601 + 5 + 9 + 6 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1275201 + ... + 1545363.

It is an arithmetic number, because the mean of its divisors is an integer number (17574708528).

Almost surely, 2^381006015966 is an apocalyptic number.

381006015966 is an abundant number, since it is smaller than the sum of its proper divisors (462579993378).

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

381006015966 is a wasteful number, since it uses less digits than its factorization.

381006015966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271885 (or 271882 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 381006015966 in words is "three hundred eighty-one billion, six million, fifteen thousand, nine hundred sixty-six".