63393493786857 has 64 divisors (see below), whose sum is σ = 101268870044160. Its totient is φ = 38961924452352.

The previous prime is 63393493786823. The next prime is 63393493786859. The reversal of 63393493786857 is 75868739439336.

63393493786857 is a `hidden beast` number, since 6 + 3 + 3 + 9 + 3 + 493 + 78 + 6 + 8 + 57 = 666.

It is not a de Polignac number, because 63393493786857 - 2⁶ = 63393493786793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63393493786859) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4139840433 + ... + 4139855745.

It is an arithmetic number, because the mean of its divisors is an integer number (1582326094440).

Almost surely, 2^{63393493786857} is an apocalyptic number.

It is an amenable number.

63393493786857 is a deficient number, since it is larger than the sum of its proper divisors (37875376257303).

63393493786857 is a wasteful number, since it uses less digits than its factorization.

63393493786857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29519 (or 29513 counting only the distinct ones).

The product of its digits is 14814213120, while the sum is 81.

The spelling of 63393493786857 in words is "sixty-three trillion, three hundred ninety-three billion, four hundred ninety-three million, seven hundred eighty-six thousand, eight hundred fifty-seven".