378787132132281 has 12 divisors (see below), whose sum is σ = 547145714825008. Its totient is φ = 252520718052024.

The previous prime is 378787132132229. The next prime is 378787132132441. The reversal of 378787132132281 is 182231231787873.

378787132132281 is a `hidden beast` number, since 3 + 7 + 8 + 7 + 87 + 1 + 321 + 3 + 228 + 1 = 666.

It is not a de Polignac number, because 378787132132281 - 2³⁵ = 378752772393913 is a prime.

It is a super-3 number, since 3×378787132132281³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378787132142281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335797555 + ... + 336923688.

Almost surely, 2^{378787132132281} is an apocalyptic number.

It is an amenable number.

378787132132281 is a deficient number, since it is larger than the sum of its proper divisors (168358582692727).

378787132132281 is a wasteful number, since it uses less digits than its factorization.

378787132132281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672783812 (or 672783809 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 378787132132281 in words is "three hundred seventy-eight trillion, seven hundred eighty-seven billion, one hundred thirty-two million, one hundred thirty-two thousand, two hundred eighty-one".