478891333578 has 32 divisors (see below), whose sum is σ = 1116947721600. Its totient is φ = 136826094720.

The previous prime is 478891333573. The next prime is 478891333597. The reversal of 478891333578 is 875333198874.

It is a happy number.

478891333578 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×478891333578² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478891333573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116346663 + ... + 116350778.

It is an arithmetic number, because the mean of its divisors is an integer number (34904616300).

Almost surely, 2^478891333578 is an apocalyptic number.

478891333578 is an abundant number, since it is smaller than the sum of its proper divisors (638056388022).

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

478891333578 is a wasteful number, since it uses less digits than its factorization.

478891333578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232697467 (or 232697453 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 66.

The spelling of 478891333578 in words is "four hundred seventy-eight billion, eight hundred ninety-one million, three hundred thirty-three thousand, five hundred seventy-eight".