378815252191 has 2 divisors, whose sum is σ = 378815252192. Its totient is φ = 378815252190.

The previous prime is 378815252173. The next prime is 378815252197. The reversal of 378815252191 is 191252518873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378815252191 - 2¹⁵ = 378815219423 is a prime.

It is a super-3 number, since 3×378815252191³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378815252197) 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 as a sum of consecutive naturals, namely, 189407626095 + 189407626096.

It is an arithmetic number, because the mean of its divisors is an integer number (189407626096).

Almost surely, 2^378815252191 is an apocalyptic number.

378815252191 is a deficient number, since it is larger than the sum of its proper divisors (1).

378815252191 is an equidigital number, since it uses as much as digits as its factorization.

378815252191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 52.

The spelling of 378815252191 in words is "three hundred seventy-eight billion, eight hundred fifteen million, two hundred fifty-two thousand, one hundred ninety-one".