478748831869 has 32 divisors (see below), whose sum is σ = 626800490496. Its totient is φ = 354558409920.

The previous prime is 478748831801. The next prime is 478748831887. The reversal of 478748831869 is 968138847874.

It is not a de Polignac number, because 478748831869 - 2¹⁵ = 478748799101 is a prime.

It is a super-2 number, since 2×478748831869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478748831069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 582867 + ... + 1138960.

It is an arithmetic number, because the mean of its divisors is an integer number (19587515328).

Almost surely, 2^478748831869 is an apocalyptic number.

It is an amenable number.

478748831869 is a deficient number, since it is larger than the sum of its proper divisors (148051658627).

478748831869 is a wasteful number, since it uses less digits than its factorization.

478748831869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722025.

The product of its digits is 520224768, while the sum is 73.

The spelling of 478748831869 in words is "four hundred seventy-eight billion, seven hundred forty-eight million, eight hundred thirty-one thousand, eight hundred sixty-nine".