485091571878 has 320 divisors, whose sum is σ = 1237382784000. Its totient is φ = 141338566656.

The previous prime is 485091571871. The next prime is 485091571889. The reversal of 485091571878 is 878175190584.

485091571878 is a `hidden beast` number, since 4 + 8 + 50 + 9 + 1 + 571 + 8 + 7 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485091571871) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 180397158 + ... + 180399846.

It is an arithmetic number, because the mean of its divisors is an integer number (3866821200).

Almost surely, 2^485091571878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 485091571878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618691392000).

485091571878 is an abundant number, since it is smaller than the sum of its proper divisors (752291212122).

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

485091571878 is a wasteful number, since it uses less digits than its factorization.

485091571878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841 (or 2832 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 63.

The spelling of 485091571878 in words is "four hundred eighty-five billion, ninety-one million, five hundred seventy-one thousand, eight hundred seventy-eight".