378044352109 has 2 divisors, whose sum is σ = 378044352110. Its totient is φ = 378044352108.

The previous prime is 378044352107. The next prime is 378044352221. The reversal of 378044352109 is 901253440873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195819525225 + 182224826884 = 442515^2 + 426878^2 .

It is an emirp because it is prime and its reverse (901253440873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378044352109 - 2¹ = 378044352107 is a prime.

Together with 378044352107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378044352107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189022176054 + 189022176055.

It is an arithmetic number, because the mean of its divisors is an integer number (189022176055).

Almost surely, 2^378044352109 is an apocalyptic number.

It is an amenable number.

378044352109 is a deficient number, since it is larger than the sum of its proper divisors (1).

378044352109 is an equidigital number, since it uses as much as digits as its factorization.

378044352109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 378044352109 in words is "three hundred seventy-eight billion, forty-four million, three hundred fifty-two thousand, one hundred nine".