378811825273 has 12 divisors (see below), whose sum is σ = 441840065700. Its totient is φ = 323825336352.

The previous prime is 378811825219. The next prime is 378811825283. The reversal of 378811825273 is 372528118873.

It can be written as a sum of positive squares in 2 ways, for example, as 232606537849 + 146205287424 = 482293^2 + 382368^2 .

It is not a de Polignac number, because 378811825273 - 2⁹ = 378811824761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378811825283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10344798 + ... + 10381351.

It is an arithmetic number, because the mean of its divisors is an integer number (36820005475).

Almost surely, 2^378811825273 is an apocalyptic number.

It is an amenable number.

378811825273 is a deficient number, since it is larger than the sum of its proper divisors (63028240427).

378811825273 is a wasteful number, since it uses less digits than its factorization.

378811825273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20726536 (or 20726529 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 55.

The spelling of 378811825273 in words is "three hundred seventy-eight billion, eight hundred eleven million, eight hundred twenty-five thousand, two hundred seventy-three".