381450218672 has 20 divisors (see below), whose sum is σ = 741935525736. Its totient is φ = 189982986240.

The previous prime is 381450218671. The next prime is 381450218687. The reversal of 381450218672 is 276812054183.

It is not an unprimeable number, because it can be changed into a prime (381450218671) 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, 46378454 + ... + 46386677.

Almost surely, 2^381450218672 is an apocalyptic number.

It is an amenable number.

381450218672 is a deficient number, since it is larger than the sum of its proper divisors (360485307064).

381450218672 is a wasteful number, since it uses less digits than its factorization.

381450218672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92765396 (or 92765390 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 381450218672 in words is "three hundred eighty-one billion, four hundred fifty million, two hundred eighteen thousand, six hundred seventy-two".