378815630656 has 28 divisors (see below), whose sum is σ = 772028819668. Its totient is φ = 184288684032.

The previous prime is 378815630621. The next prime is 378815630701. The reversal of 378815630656 is 656036518873.

It can be written as a sum of positive squares in 2 ways, for example, as 338975470656 + 39840160000 = 582216^2 + 199600^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 378815630656.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 79984041 + ... + 79988776.

Almost surely, 2^378815630656 is an apocalyptic number.

It is an amenable number.

378815630656 is an abundant number, since it is smaller than the sum of its proper divisors (393213189012).

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

378815630656 is a wasteful number, since it uses less digits than its factorization.

378815630656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159972866 (or 159972856 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 378815630656 in words is "three hundred seventy-eight billion, eight hundred fifteen million, six hundred thirty thousand, six hundred fifty-six".