381450218755 has 16 divisors (see below), whose sum is σ = 465559688160. Its totient is φ = 299948583168.

The previous prime is 381450218741. The next prime is 381450218759. The reversal of 381450218755 is 557812054183.

It is a cyclic number.

It is not a de Polignac number, because 381450218755 - 2⁷ = 381450218627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381450218699 and 381450218708.

It is not an unprimeable number, because it can be changed into a prime (381450218759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2277049 + ... + 2438821.

It is an arithmetic number, because the mean of its divisors is an integer number (29097480510).

Almost surely, 2^381450218755 is an apocalyptic number.

381450218755 is a deficient number, since it is larger than the sum of its proper divisors (84109469405).

381450218755 is a wasteful number, since it uses less digits than its factorization.

381450218755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169830.

The product of its (nonzero) digits is 1344000, while the sum is 49.

The spelling of 381450218755 in words is "three hundred eighty-one billion, four hundred fifty million, two hundred eighteen thousand, seven hundred fifty-five".