478049257045 has 4 divisors (see below), whose sum is σ = 573659108460. Its totient is φ = 382439405632.

The previous prime is 478049257013. The next prime is 478049257097. The reversal of 478049257045 is 540752940874.

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 92177210449 + 385872046596 = 303607^2 + 621186^2 .

It is a cyclic number.

It is not a de Polignac number, because 478049257045 - 2⁵ = 478049257013 is a prime.

It is a super-2 number, since 2×478049257045² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 47804925700 + ... + 47804925709.

It is an arithmetic number, because the mean of its divisors is an integer number (143414777115).

Almost surely, 2^478049257045 is an apocalyptic number.

It is an amenable number.

478049257045 is a deficient number, since it is larger than the sum of its proper divisors (95609851415).

478049257045 is an equidigital number, since it uses as much as digits as its factorization.

478049257045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95609851414.

The product of its (nonzero) digits is 11289600, while the sum is 55.

The spelling of 478049257045 in words is "four hundred seventy-eight billion, forty-nine million, two hundred fifty-seven thousand, forty-five".