378517582441 has 4 divisors (see below), whose sum is σ = 391569912900. Its totient is φ = 365465251984.

The previous prime is 378517582411. The next prime is 378517582459. The reversal of 378517582441 is 144285715873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 191738894400 + 186778688041 = 437880^2 + 432179^2 .

It is a cyclic number.

It is not a de Polignac number, because 378517582441 - 2²⁵ = 378484028009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378517582411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6526165186 + ... + 6526165243.

It is an arithmetic number, because the mean of its divisors is an integer number (97892478225).

Almost surely, 2^378517582441 is an apocalyptic number.

It is an amenable number.

378517582441 is a deficient number, since it is larger than the sum of its proper divisors (13052330459).

378517582441 is a wasteful number, since it uses less digits than its factorization.

378517582441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13052330458.

The product of its digits is 7526400, while the sum is 55.

The spelling of 378517582441 in words is "three hundred seventy-eight billion, five hundred seventeen million, five hundred eighty-two thousand, four hundred forty-one".