378975984687 has 32 divisors (see below), whose sum is σ = 584984736000. Its totient is φ = 242183541600.

The previous prime is 378975984679. The next prime is 378975984701. The reversal of 378975984687 is 786489579873.

378975984687 is a `hidden beast` number, since 3 + 7 + 89 + 75 + 9 + 8 + 468 + 7 = 666.

It is not a de Polignac number, because 378975984687 - 2³ = 378975984679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378975974687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1632189 + ... + 1849862.

It is an arithmetic number, because the mean of its divisors is an integer number (18280773000).

Almost surely, 2^378975984687 is an apocalyptic number.

378975984687 is a deficient number, since it is larger than the sum of its proper divisors (206008751313).

378975984687 is a wasteful number, since it uses less digits than its factorization.

378975984687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482228 (or 3482222 counting only the distinct ones).

The product of its digits is 5120962560, while the sum is 81.

The spelling of 378975984687 in words is "three hundred seventy-eight billion, nine hundred seventy-five million, nine hundred eighty-four thousand, six hundred eighty-seven".