478390271698 has 16 divisors (see below), whose sum is σ = 719361453024. Its totient is φ = 238603832640.

The previous prime is 478390271633. The next prime is 478390271767. The reversal of 478390271698 is 896172093874.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173061 + ... + 1527367.

It is an arithmetic number, because the mean of its divisors is an integer number (44960090814).

Almost surely, 2^478390271698 is an apocalyptic number.

478390271698 is a deficient number, since it is larger than the sum of its proper divisors (240971181326).

478390271698 is a wasteful number, since it uses less digits than its factorization.

478390271698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355977.

The product of its (nonzero) digits is 36578304, while the sum is 64.

The spelling of 478390271698 in words is "four hundred seventy-eight billion, three hundred ninety million, two hundred seventy-one thousand, six hundred ninety-eight".