63704770056 has 128 divisors (see below), whose sum is σ = 177917040000. Its totient is φ = 21120168960.

The previous prime is 63704770013. The next prime is 63704770069. The reversal of 63704770056 is 65007740736.

63704770056 is a `hidden beast` number, since 63 + 70 + 477 + 0 + 0 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 63704769993 and 63704770020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37015276 + ... + 37016996.

It is an arithmetic number, because the mean of its divisors is an integer number (1389976875).

Almost surely, 2^63704770056 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 63704770056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88958520000).

63704770056 is an abundant number, since it is smaller than the sum of its proper divisors (114212269944).

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

63704770056 is a wasteful number, since it uses less digits than its factorization.

63704770056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564 (or 2554 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

The spelling of 63704770056 in words is "sixty-three billion, seven hundred four million, seven hundred seventy thousand, fifty-six".