5478181632 has 720 divisors, whose sum is σ = 21083876352. Its totient is φ = 1373552640.

The previous prime is 5478181573. The next prime is 5478181691. The reversal of 5478181632 is 2361818745.

5478181632 is a `hidden beast` number, since 5 + 4 + 7 + 8 + 1 + 8 + 1 + 632 = 666.

It is an interprime number because it is at equal distance from previous prime (5478181573) and next prime (5478181691).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 75043548 + ... + 75043620.

Almost surely, 2^5478181632 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 5478181632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10541938176).

5478181632 is an abundant number, since it is smaller than the sum of its proper divisors (15605694720).

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

5478181632 is a wasteful number, since it uses less digits than its factorization.

5478181632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 143 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 5478181632 is about 74014.7392888741. The cubic root of 5478181632 is about 1762.8369398379.

The spelling of 5478181632 in words is "five billion, four hundred seventy-eight million, one hundred eighty-one thousand, six hundred thirty-two".