478866697904 has 160 divisors (see below), whose sum is σ = 1133154140160. Its totient is φ = 191480889600.

The previous prime is 478866697901. The next prime is 478866697927. The reversal of 478866697904 is 409796668874.

It is a super-2 number, since 2×478866697904² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478866697901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58458449 + ... + 58466639.

It is an arithmetic number, because the mean of its divisors is an integer number (7082213376).

Almost surely, 2^478866697904 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 478866697904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566577070080).

478866697904 is an abundant number, since it is smaller than the sum of its proper divisors (654287442256).

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

478866697904 is a wasteful number, since it uses less digits than its factorization.

478866697904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8639 (or 8633 counting only the distinct ones).

The product of its (nonzero) digits is 877879296, while the sum is 74.

The spelling of 478866697904 in words is "four hundred seventy-eight billion, eight hundred sixty-six million, six hundred ninety-seven thousand, nine hundred four".