4978439634168 has 288 divisors, whose sum is σ = 18240566853600. Its totient is φ = 1193631690240.

The previous prime is 4978439634167. The next prime is 4978439634193. The reversal of 4978439634168 is 8614369348794.

It is a happy number.

4978439634168 is a `hidden beast` number, since 4 + 9 + 78 + 4 + 396 + 3 + 4 + 168 = 666.

It is a super-2 number, since 2×4978439634168² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 4978439634096 and 4978439634105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978439634167) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 2347023 + ... + 3932606.

It is an arithmetic number, because the mean of its divisors is an integer number (63335301575).

Almost surely, 2^{4978439634168} is an apocalyptic number.

It is an amenable number.

4978439634168 is an abundant number, since it is smaller than the sum of its proper divisors (13262127219432).

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

4978439634168 is a wasteful number, since it uses less digits than its factorization.

4978439634168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6279683 (or 6279665 counting only the distinct ones).

The product of its digits is 752467968, while the sum is 72.

The spelling of 4978439634168 in words is "four trillion, nine hundred seventy-eight billion, four hundred thirty-nine million, six hundred thirty-four thousand, one hundred sixty-eight".