63791715456 has 192 divisors, whose sum is σ = 219013380000. Its totient is φ = 18226156032.

The previous prime is 63791715437. The next prime is 63791715457. The reversal of 63791715456 is 65451719736.

63791715456 is a `hidden beast` number, since 6 + 3 + 7 + 91 + 7 + 1 + 545 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (63791715457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19006 + ... + 357693.

Almost surely, 2^63791715456 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 63791715456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109506690000).

63791715456 is an abundant number, since it is smaller than the sum of its proper divisors (155221664544).

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

63791715456 is a wasteful number, since it uses less digits than its factorization.

63791715456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376736 (or 376711 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

The spelling of 63791715456 in words is "sixty-three billion, seven hundred ninety-one million, seven hundred fifteen thousand, four hundred fifty-six".