478498988838 has 64 divisors (see below), whose sum is σ = 1054379192832. Its totient is φ = 143872028160.

The previous prime is 478498988791. The next prime is 478498988839. The reversal of 478498988838 is 838889894874.

It is a super-2 number, since 2×478498988838² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478498988839) 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 31 ways as a sum of consecutive naturals, for example, 243481 + ... + 1008107.

It is an arithmetic number, because the mean of its divisors is an integer number (16474674888).

Almost surely, 2^478498988838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478498988838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527189596416).

478498988838 is an abundant number, since it is smaller than the sum of its proper divisors (575880203994).

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

478498988838 is a wasteful number, since it uses less digits than its factorization.

478498988838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764829.

The product of its digits is 7134511104, while the sum is 84.

The spelling of 478498988838 in words is "four hundred seventy-eight billion, four hundred ninety-eight million, nine hundred eighty-eight thousand, eight hundred thirty-eight".