387606631878 has 24 divisors (see below), whose sum is σ = 866905156416. Its totient is φ = 125034397200.

The previous prime is 387606631861. The next prime is 387606631889. The reversal of 387606631878 is 878136606783.

387606631878 is a `hidden beast` number, since 3 + 8 + 7 + 606 + 6 + 3 + 18 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347317213 + ... + 347318328.

It is an arithmetic number, because the mean of its divisors is an integer number (36121048184).

Almost surely, 2^387606631878 is an apocalyptic number.

387606631878 is an abundant number, since it is smaller than the sum of its proper divisors (479298524538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387606631878 is a wasteful number, since it uses less digits than its factorization.

387606631878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694635580 (or 694635577 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 387606631878 in words is "three hundred eighty-seven billion, six hundred six million, six hundred thirty-one thousand, eight hundred seventy-eight".