478148989246 has 4 divisors (see below), whose sum is σ = 717223483872. Its totient is φ = 239074494622.

The previous prime is 478148989243. The next prime is 478148989259. The reversal of 478148989246 is 642989841874.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478148989243) by changing a digit.

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 as a sum of consecutive naturals, namely, 119537247310 + ... + 119537247313.

It is an arithmetic number, because the mean of its divisors is an integer number (179305870968).

Almost surely, 2^478148989246 is an apocalyptic number.

478148989246 is a deficient number, since it is larger than the sum of its proper divisors (239074494626).

478148989246 is a wasteful number, since it uses less digits than its factorization.

478148989246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239074494625.

The product of its digits is 222953472, while the sum is 70.

The spelling of 478148989246 in words is "four hundred seventy-eight billion, one hundred forty-eight million, nine hundred eighty-nine thousand, two hundred forty-six".