378816312547 has 2 divisors, whose sum is σ = 378816312548. Its totient is φ = 378816312546.

The previous prime is 378816312527. The next prime is 378816312569. The reversal of 378816312547 is 745213618873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378816312547 - 2³⁵ = 344456574179 is a prime.

It is not a weakly prime, because it can be changed into another prime (378816312527) 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, 189408156273 + 189408156274.

It is an arithmetic number, because the mean of its divisors is an integer number (189408156274).

Almost surely, 2^378816312547 is an apocalyptic number.

378816312547 is a deficient number, since it is larger than the sum of its proper divisors (1).

378816312547 is an equidigital number, since it uses as much as digits as its factorization.

378816312547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 55.

The spelling of 378816312547 in words is "three hundred seventy-eight billion, eight hundred sixteen million, three hundred twelve thousand, five hundred forty-seven".