478054507944 has 128 divisors (see below), whose sum is σ = 1356412982400. Its totient is φ = 139187082240.

The previous prime is 478054507939. The next prime is 478054507949. The reversal of 478054507944 is 449705450874.

It is an interprime number because it is at equal distance from previous prime (478054507939) and next prime (478054507949).

It is a super-2 number, since 2×478054507944² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (478054507949) 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, 5009314 + ... + 5103854.

It is an arithmetic number, because the mean of its divisors is an integer number (10596976425).

Almost surely, 2^478054507944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478054507944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678206491200).

478054507944 is an abundant number, since it is smaller than the sum of its proper divisors (878358474456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478054507944 is a wasteful number, since it uses less digits than its factorization.

478054507944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95435 (or 95431 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 57.

The spelling of 478054507944 in words is "four hundred seventy-eight billion, fifty-four million, five hundred seven thousand, nine hundred forty-four".