378874045591 has 2 divisors, whose sum is σ = 378874045592. Its totient is φ = 378874045590.

The previous prime is 378874045531. The next prime is 378874045603. The reversal of 378874045591 is 195540478873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378874045591 - 2¹⁹ = 378873521303 is a prime.

It is a super-2 number, since 2×378874045591² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378874045531) 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, 189437022795 + 189437022796.

It is an arithmetic number, because the mean of its divisors is an integer number (189437022796).

Almost surely, 2^378874045591 is an apocalyptic number.

378874045591 is a deficient number, since it is larger than the sum of its proper divisors (1).

378874045591 is an equidigital number, since it uses as much as digits as its factorization.

378874045591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 378874045591 in words is "three hundred seventy-eight billion, eight hundred seventy-four million, forty-five thousand, five hundred ninety-one".