478696691278 has 32 divisors (see below), whose sum is σ = 790113179520. Its totient is φ = 216162747360.

The previous prime is 478696691267. The next prime is 478696691293. The reversal of 478696691278 is 872196696874.

It is a self number, because there is not a number n which added to its sum of digits gives 478696691278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415800 + ... + 1063147.

It is an arithmetic number, because the mean of its divisors is an integer number (24691036860).

Almost surely, 2^478696691278 is an apocalyptic number.

478696691278 is a deficient number, since it is larger than the sum of its proper divisors (311416488242).

478696691278 is a wasteful number, since it uses less digits than its factorization.

478696691278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479232.

The product of its digits is 438939648, while the sum is 73.

The spelling of 478696691278 in words is "four hundred seventy-eight billion, six hundred ninety-six million, six hundred ninety-one thousand, two hundred seventy-eight".