378385469281 has 16 divisors (see below), whose sum is σ = 407855088000. Its totient is φ = 349939294848.

The previous prime is 378385469269. The next prime is 378385469291. The reversal of 378385469281 is 182964583873.

It is a cyclic number.

It is not a de Polignac number, because 378385469281 - 2⁷ = 378385469153 is a prime.

It is a super-2 number, since 2×378385469281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378385469291) 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, 743716 + ... + 1144501.

It is an arithmetic number, because the mean of its divisors is an integer number (25490943000).

Almost surely, 2^378385469281 is an apocalyptic number.

It is an amenable number.

378385469281 is a deficient number, since it is larger than the sum of its proper divisors (29469618719).

378385469281 is a wasteful number, since it uses less digits than its factorization.

378385469281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888488.

The product of its digits is 69672960, while the sum is 64.

The spelling of 378385469281 in words is "three hundred seventy-eight billion, three hundred eighty-five million, four hundred sixty-nine thousand, two hundred eighty-one".