378781618508 has 6 divisors (see below), whose sum is σ = 662867832396. Its totient is φ = 189390809252.

The previous prime is 378781618499. The next prime is 378781618513. The reversal of 378781618508 is 805816187873.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47347702310 + ... + 47347702317.

It is an arithmetic number, because the mean of its divisors is an integer number (110477972066).

Almost surely, 2^378781618508 is an apocalyptic number.

It is an amenable number.

378781618508 is a deficient number, since it is larger than the sum of its proper divisors (284086213888).

378781618508 is a wasteful number, since it uses less digits than its factorization.

378781618508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94695404631 (or 94695404629 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 62.

The spelling of 378781618508 in words is "three hundred seventy-eight billion, seven hundred eighty-one million, six hundred eighteen thousand, five hundred eight".