478978502442 has 32 divisors (see below), whose sum is σ = 1106517184704. Its totient is φ = 136607059200.

The previous prime is 478978502369. The next prime is 478978502531. The reversal of 478978502442 is 244205879874.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213447409 + ... + 213449652.

It is an arithmetic number, because the mean of its divisors is an integer number (34578662022).

Almost surely, 2^478978502442 is an apocalyptic number.

478978502442 is an abundant number, since it is smaller than the sum of its proper divisors (627538682262).

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

478978502442 is a wasteful number, since it uses less digits than its factorization.

478978502442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426897094.

The product of its (nonzero) digits is 36126720, while the sum is 60.

The spelling of 478978502442 in words is "four hundred seventy-eight billion, nine hundred seventy-eight million, five hundred two thousand, four hundred forty-two".