478009172251 has 8 divisors (see below), whose sum is σ = 545060232864. Its totient is φ = 415283986560.

The previous prime is 478009172239. The next prime is 478009172273. The reversal of 478009172251 is 152271900874.

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 478009172251 - 2¹¹ = 478009170203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478009172231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081468495 + ... + 1081468936.

It is an arithmetic number, because the mean of its divisors is an integer number (68132529108).

Almost surely, 2^478009172251 is an apocalyptic number.

478009172251 is a deficient number, since it is larger than the sum of its proper divisors (67051060613).

478009172251 is a wasteful number, since it uses less digits than its factorization.

478009172251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162937461.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 478009172251 in words is "four hundred seventy-eight billion, nine million, one hundred seventy-two thousand, two hundred fifty-one".