478821032878 has 4 divisors (see below), whose sum is σ = 718231549320. Its totient is φ = 239410516438.

The previous prime is 478821032861. The next prime is 478821032903. The reversal of 478821032878 is 878230128874.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119705258218 + ... + 119705258221.

It is an arithmetic number, because the mean of its divisors is an integer number (179557887330).

Almost surely, 2^478821032878 is an apocalyptic number.

478821032878 is a deficient number, since it is larger than the sum of its proper divisors (239410516442).

478821032878 is a wasteful number, since it uses less digits than its factorization.

478821032878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239410516441.

The product of its (nonzero) digits is 9633792, while the sum is 58.

The spelling of 478821032878 in words is "four hundred seventy-eight billion, eight hundred twenty-one million, thirty-two thousand, eight hundred seventy-eight".