381340681144 has 16 divisors (see below), whose sum is σ = 715398014520. Its totient is φ = 190567877280.

The previous prime is 381340681133. The next prime is 381340681147. The reversal of 381340681144 is 441186043183.

It is a self number, because there is not a number n which added to its sum of digits gives 381340681144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381340681147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12792094 + ... + 12821869.

Almost surely, 2^381340681144 is an apocalyptic number.

It is an amenable number.

381340681144 is a deficient number, since it is larger than the sum of its proper divisors (334057333376).

381340681144 is a wasteful number, since it uses less digits than its factorization.

381340681144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25615830 (or 25615826 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 381340681144 in words is "three hundred eighty-one billion, three hundred forty million, six hundred eighty-one thousand, one hundred forty-four".