378987987980 has 48 divisors (see below), whose sum is σ = 924987651840. Its totient is φ = 127736384448.

The previous prime is 378987987979. The next prime is 378987988013. The reversal of 378987987980 is 89789789873.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22932902 + ... + 22949421.

It is an arithmetic number, because the mean of its divisors is an integer number (19270576080).

Almost surely, 2^378987987980 is an apocalyptic number.

It is an amenable number.

378987987980 is an abundant number, since it is smaller than the sum of its proper divisors (545999663860).

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

378987987980 is a wasteful number, since it uses less digits than its factorization.

378987987980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45882398 (or 45882396 counting only the distinct ones).

The product of its (nonzero) digits is 3072577536, while the sum is 83.

The spelling of 378987987980 in words is "three hundred seventy-eight billion, nine hundred eighty-seven million, nine hundred eighty-seven thousand, nine hundred eighty".