479146686649 has 4 divisors (see below), whose sum is σ = 479168129140. Its totient is φ = 479125244160.

The previous prime is 479146686581. The next prime is 479146686677. The reversal of 479146686649 is 946686641974.

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

It can be written as a sum of positive squares in 2 ways, for example, as 179061846649 + 300084840000 = 423157^2 + 547800^2 .

It is a cyclic number.

It is not a de Polignac number, because 479146686649 - 2³¹ = 476999203001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479146686049) 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, 10687692 + ... + 10732429.

It is an arithmetic number, because the mean of its divisors is an integer number (119792032285).

Almost surely, 2^479146686649 is an apocalyptic number.

It is an amenable number.

479146686649 is a deficient number, since it is larger than the sum of its proper divisors (21442491).

479146686649 is a wasteful number, since it uses less digits than its factorization.

479146686649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21442490.

The product of its digits is 376233984, while the sum is 70.

The spelling of 479146686649 in words is "four hundred seventy-nine billion, one hundred forty-six million, six hundred eighty-six thousand, six hundred forty-nine".