378903912500 has 72 divisors (see below), whose sum is σ = 831756436056. Its totient is φ = 151020800000.

The previous prime is 378903912479. The next prime is 378903912511. The reversal of 378903912500 is 5219309873.

It can be written as a sum of positive squares in 12 ways, for example, as 301589885584 + 77314026916 = 549172^2 + 278054^2 .

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 23 ways as a sum of consecutive naturals, for example, 3458564 + ... + 3566436.

It is an arithmetic number, because the mean of its divisors is an integer number (11552172723).

Almost surely, 2^378903912500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378903912500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415878218028).

378903912500 is an abundant number, since it is smaller than the sum of its proper divisors (452852523556).

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

378903912500 is a wasteful number, since it uses less digits than its factorization.

378903912500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108183 (or 108161 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 378903912500 in words is "three hundred seventy-eight billion, nine hundred three million, nine hundred twelve thousand, five hundred".