378631643625 has 384 divisors, whose sum is σ = 779571247104. Its totient is φ = 175785984000.

The previous prime is 378631643603. The next prime is 378631643657. The reversal of 378631643625 is 526346136873.

378631643625 is a `hidden beast` number, since 3 + 7 + 8 + 6 + 3 + 1 + 6 + 4 + 3 + 625 = 666.

It is not a de Polignac number, because 378631643625 - 2¹⁸ = 378631381481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2763734557 + ... + 2763734693.

It is an arithmetic number, because the mean of its divisors is an integer number (2030133456).

Almost surely, 2^378631643625 is an apocalyptic number.

It is an amenable number.

378631643625 is an abundant number, since it is smaller than the sum of its proper divisors (400939603479).

378631643625 is a wasteful number, since it uses less digits than its factorization.

378631643625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 349 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 54.

The spelling of 378631643625 in words is "three hundred seventy-eight billion, six hundred thirty-one million, six hundred forty-three thousand, six hundred twenty-five".