63399393636544 has 84 divisors (see below), whose sum is σ = 150303640652976. Its totient is φ = 26436812742144.

The previous prime is 63399393636533. The next prime is 63399393636547. The reversal of 63399393636544 is 44563639399336.

It is a super-2 number, since 2×63399393636544² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63399393636547) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 273081852 + ... + 273313915.

Almost surely, 2^{63399393636544} is an apocalyptic number.

63399393636544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

63399393636544 is an abundant number, since it is smaller than the sum of its proper divisors (86904247016432).

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

63399393636544 is a wasteful number, since it uses less digits than its factorization.

63399393636544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546395830 (or 546395813 counting only the distinct ones).

The product of its digits is 3061100160, while the sum is 73.

The spelling of 63399393636544 in words is "sixty-three trillion, three hundred ninety-nine billion, three hundred ninety-three million, six hundred thirty-six thousand, five hundred forty-four".