63991419936 has 48 divisors (see below), whose sum is σ = 167991957504. Its totient is φ = 21328634624.

The previous prime is 63991419857. The next prime is 63991419979.

63991419936 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×63991419936³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63991419936.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527526 + ... + 1568858.

It is an arithmetic number, because the mean of its divisors is an integer number (3499832448).

Almost surely, 2^63991419936 is an apocalyptic number.

It is an amenable number.

63991419936 is an abundant number, since it is smaller than the sum of its proper divisors (104000537568).

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

63991419936 is a wasteful number, since it uses less digits than its factorization.

63991419936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57473 (or 57465 counting only the distinct ones).

The product of its digits is 8503056, while the sum is 60.

The spelling of 63991419936 in words is "sixty-three billion, nine hundred ninety-one million, four hundred nineteen thousand, nine hundred thirty-six".