378136205297 has 4 divisors (see below), whose sum is σ = 391175384820. Its totient is φ = 365097025776.

The previous prime is 378136205273. The next prime is 378136205303. The reversal of 378136205297 is 792502631873.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137373268321 + 240762936976 = 370639^2 + 490676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378136205297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378136205597) 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 in 3 ways as a sum of consecutive naturals, for example, 6519589718 + ... + 6519589775.

It is an arithmetic number, because the mean of its divisors is an integer number (97793846205).

Almost surely, 2^378136205297 is an apocalyptic number.

It is an amenable number.

378136205297 is a deficient number, since it is larger than the sum of its proper divisors (13039179523).

378136205297 is a wasteful number, since it uses less digits than its factorization.

378136205297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13039179522.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 378136205297 in words is "three hundred seventy-eight billion, one hundred thirty-six million, two hundred five thousand, two hundred ninety-seven".