63648040698 has 96 divisors (see below), whose sum is σ = 159507092160. Its totient is φ = 18128033280.

The previous prime is 63648040639. The next prime is 63648040727. The reversal of 63648040698 is 89604084636.

63648040698 is a `hidden beast` number, since 6 + 36 + 480 + 40 + 6 + 98 = 666.

It is a Curzon 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 47 ways as a sum of consecutive naturals, for example, 2535573 + ... + 2560551.

It is an arithmetic number, because the mean of its divisors is an integer number (1661532210).

Almost surely, 2^63648040698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63648040698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79753546080).

63648040698 is an abundant number, since it is smaller than the sum of its proper divisors (95859051462).

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

63648040698 is a wasteful number, since it uses less digits than its factorization.

63648040698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25772 (or 25769 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 63648040698 in words is "sixty-three billion, six hundred forty-eight million, forty thousand, six hundred ninety-eight".