56478194640 has 480 divisors, whose sum is σ = 238107617280. Its totient is φ = 11697675264.

The previous prime is 56478194639. The next prime is 56478194651. The reversal of 56478194640 is 4649187465.

56478194640 is a `hidden beast` number, since 564 + 7 + 8 + 19 + 4 + 64 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2189659 + ... + 2215301.

It is an arithmetic number, because the mean of its divisors is an integer number (496057536).

Almost surely, 2^56478194640 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 56478194640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119053808640).

56478194640 is an abundant number, since it is smaller than the sum of its proper divisors (181629422640).

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

56478194640 is a wasteful number, since it uses less digits than its factorization.

56478194640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25711 (or 25702 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 56478194640 in words is "fifty-six billion, four hundred seventy-eight million, one hundred ninety-four thousand, six hundred forty".