378149165057 has 2 divisors, whose sum is σ = 378149165058. Its totient is φ = 378149165056.

The previous prime is 378149165041. The next prime is 378149165059. The reversal of 378149165057 is 750561941873.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285199789681 + 92949375376 = 534041^2 + 304876^2 .

It is a cyclic number.

It is not a de Polignac number, because 378149165057 - 2⁴ = 378149165041 is a prime.

Together with 378149165059, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 378149164993 and 378149165011.

It is not a weakly prime, because it can be changed into another prime (378149165059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189074582528 + 189074582529.

It is an arithmetic number, because the mean of its divisors is an integer number (189074582529).

Almost surely, 2^378149165057 is an apocalyptic number.

It is an amenable number.

378149165057 is a deficient number, since it is larger than the sum of its proper divisors (1).

378149165057 is an equidigital number, since it uses as much as digits as its factorization.

378149165057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6350400, while the sum is 56.

The spelling of 378149165057 in words is "three hundred seventy-eight billion, one hundred forty-nine million, one hundred sixty-five thousand, fifty-seven".