378149165045 has 4 divisors (see below), whose sum is σ = 453778998060. Its totient is φ = 302519332032.

The previous prime is 378149165041. The next prime is 378149165057. The reversal of 378149165045 is 540561941873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540561941873 = 48991 ⋅11033903.

It can be written as a sum of positive squares in 2 ways, for example, as 136516948324 + 241632216721 = 369482^2 + 491561^2 .

It is a cyclic number.

It is not a de Polignac number, because 378149165045 - 2² = 378149165041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378149165041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37814916500 + ... + 37814916509.

It is an arithmetic number, because the mean of its divisors is an integer number (113444749515).

Almost surely, 2^378149165045 is an apocalyptic number.

It is an amenable number.

378149165045 is a deficient number, since it is larger than the sum of its proper divisors (75629833015).

378149165045 is an equidigital number, since it uses as much as digits as its factorization.

378149165045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75629833014.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 378149165045 in words is "three hundred seventy-eight billion, one hundred forty-nine million, one hundred sixty-five thousand, forty-five".