478138291199 has 4 divisors (see below), whose sum is σ = 503303464440. Its totient is φ = 452973117960.

The previous prime is 478138291177. The next prime is 478138291259. The reversal of 478138291199 is 991192831874.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478138291199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478138291699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12582586592 + ... + 12582586629.

It is an arithmetic number, because the mean of its divisors is an integer number (125825866110).

Almost surely, 2^478138291199 is an apocalyptic number.

478138291199 is a deficient number, since it is larger than the sum of its proper divisors (25165173241).

478138291199 is a wasteful number, since it uses less digits than its factorization.

478138291199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25165173240.

The product of its digits is 7838208, while the sum is 62.

The spelling of 478138291199 in words is "four hundred seventy-eight billion, one hundred thirty-eight million, two hundred ninety-one thousand, one hundred ninety-nine".