378811481081 has 12 divisors (see below), whose sum is σ = 418546178064. Its totient is φ = 340014846600.

The previous prime is 378811481051. The next prime is 378811481119. The reversal of 378811481081 is 180184118873.

It is not a de Polignac number, because 378811481081 - 2²² = 378807286777 is a prime.

It is a super-3 number, since 3×378811481081³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378811481051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2690315 + ... + 2827616.

It is an arithmetic number, because the mean of its divisors is an integer number (34878848172).

Almost surely, 2^378811481081 is an apocalyptic number.

It is an amenable number.

378811481081 is a deficient number, since it is larger than the sum of its proper divisors (39734696983).

378811481081 is an equidigital number, since it uses as much as digits as its factorization.

378811481081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518100 (or 5518021 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 50.

The spelling of 378811481081 in words is "three hundred seventy-eight billion, eight hundred eleven million, four hundred eighty-one thousand, eighty-one".