378131222797 has 4 divisors (see below), whose sum is σ = 378158851420. Its totient is φ = 378103594176.

The previous prime is 378131222741. The next prime is 378131222801. The reversal of 378131222797 is 797222131873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797222131873 = 42157 ⋅18910789.

It can be written as a sum of positive squares in 2 ways, for example, as 360247242436 + 17883980361 = 600206^2 + 133731^2 .

It is a cyclic number.

It is not a de Polignac number, because 378131222797 - 2²³ = 378122834189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378131252797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13793772 + ... + 13821157.

It is an arithmetic number, because the mean of its divisors is an integer number (94539712855).

Almost surely, 2^378131222797 is an apocalyptic number.

It is an amenable number.

378131222797 is a deficient number, since it is larger than the sum of its proper divisors (27628623).

378131222797 is a wasteful number, since it uses less digits than its factorization.

378131222797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27628622.

The product of its digits is 1778112, while the sum is 52.

The spelling of 378131222797 in words is "three hundred seventy-eight billion, one hundred thirty-one million, two hundred twenty-two thousand, seven hundred ninety-seven".