378856875563 has 2 divisors, whose sum is σ = 378856875564. Its totient is φ = 378856875562.

The previous prime is 378856875533. The next prime is 378856875599. The reversal of 378856875563 is 365578658873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378856875563 - 2¹⁴ = 378856859179 is a prime.

It is a super-2 number, since 2×378856875563² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (378856875533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189428437781 + 189428437782.

It is an arithmetic number, because the mean of its divisors is an integer number (189428437782).

Almost surely, 2^378856875563 is an apocalyptic number.

378856875563 is a deficient number, since it is larger than the sum of its proper divisors (1).

378856875563 is an equidigital number, since it uses as much as digits as its factorization.

378856875563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064000, while the sum is 71.

The spelling of 378856875563 in words is "three hundred seventy-eight billion, eight hundred fifty-six million, eight hundred seventy-five thousand, five hundred sixty-three".