216474507072 has 168 divisors, whose sum is σ = 650234838720. Its totient is φ = 70621643520.

The previous prime is 216474507059. The next prime is 216474507083. The reversal of 216474507072 is 270705474612.

216474507072 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 74 + 507 + 0 + 72 = 666.

It is a super-2 number, since 2×216474507072² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3788797 + ... + 3845507.

Almost surely, 2^216474507072 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 216474507072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325117419360).

216474507072 is an abundant number, since it is smaller than the sum of its proper divisors (433760331648).

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

216474507072 is an equidigital number, since it uses as much as digits as its factorization.

216474507072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56826 (or 56763 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The spelling of 216474507072 in words is "two hundred sixteen billion, four hundred seventy-four million, five hundred seven thousand, seventy-two".