478695253989 has 8 divisors (see below), whose sum is σ = 638886702240. Its totient is φ = 318816987536.

The previous prime is 478695253987. The next prime is 478695253991. The reversal of 478695253989 is 989352596874.

It is an interprime number because it is at equal distance from previous prime (478695253987) and next prime (478695253991).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 478695253989 - 2¹ = 478695253987 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 478695253989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478695253987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78291882 + ... + 78297995.

It is an arithmetic number, because the mean of its divisors is an integer number (79860837780).

Almost surely, 2^478695253989 is an apocalyptic number.

It is an amenable number.

478695253989 is a deficient number, since it is larger than the sum of its proper divisors (160191448251).

478695253989 is a wasteful number, since it uses less digits than its factorization.

478695253989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156590899.

The product of its digits is 1175731200, while the sum is 75.

The spelling of 478695253989 in words is "four hundred seventy-eight billion, six hundred ninety-five million, two hundred fifty-three thousand, nine hundred eighty-nine".