63393784398 has 72 divisors (see below), whose sum is σ = 162486450360. Its totient is φ = 17805503520.

The previous prime is 63393784379. The next prime is 63393784403. The reversal of 63393784398 is 89348739336.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 557073 + ... + 661148.

It is an arithmetic number, because the mean of its divisors is an integer number (2256756255).

Almost surely, 2^63393784398 is an apocalyptic number.

63393784398 is an abundant number, since it is smaller than the sum of its proper divisors (99092665962).

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

63393784398 is a wasteful number, since it uses less digits than its factorization.

63393784398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218302 (or 1218292 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 63.

The spelling of 63393784398 in words is "sixty-three billion, three hundred ninety-three million, seven hundred eighty-four thousand, three hundred ninety-eight".