478866989533 has 4 divisors (see below), whose sum is σ = 494314311808. Its totient is φ = 463419667260.

The previous prime is 478866989521. The next prime is 478866989561. The reversal of 478866989533 is 335989668874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478866989533 - 2²¹ = 478864892381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478866989533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478866989333) 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, 7723661091 + ... + 7723661152.

It is an arithmetic number, because the mean of its divisors is an integer number (123578577952).

Almost surely, 2^478866989533 is an apocalyptic number.

It is an amenable number.

478866989533 is a deficient number, since it is larger than the sum of its proper divisors (15447322275).

478866989533 is a wasteful number, since it uses less digits than its factorization.

478866989533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15447322274.

The product of its digits is 1881169920, while the sum is 76.

The spelling of 478866989533 in words is "four hundred seventy-eight billion, eight hundred sixty-six million, nine hundred eighty-nine thousand, five hundred thirty-three".