4518629891968 has 128 divisors (see below), whose sum is σ = 9526647816000. Its totient is φ = 2130445025280.

The previous prime is 4518629891959. The next prime is 4518629891981. The reversal of 4518629891968 is 8691989268154.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×4518629891968² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4518629891894 and 4518629891903.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 614859558 + ... + 614866906.

Almost surely, 2^{4518629891968} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4518629891968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4763323908000).

4518629891968 is an abundant number, since it is smaller than the sum of its proper divisors (5008017924032).

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

4518629891968 is a wasteful number, since it uses less digits than its factorization.

4518629891968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320 (or 10308 counting only the distinct ones).

The product of its digits is 537477120, while the sum is 76.

The spelling of 4518629891968 in words is "four trillion, five hundred eighteen billion, six hundred twenty-nine million, eight hundred ninety-one thousand, nine hundred sixty-eight".