216466374740 has 96 divisors (see below), whose sum is σ = 566925778944. Its totient is φ = 67448914560.

The previous prime is 216466374739. The next prime is 216466374743. The reversal of 216466374740 is 47473664612.

It is a super-2 number, since 2×216466374740² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216466374743) 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, 5318909 + ... + 5359451.

It is an arithmetic number, because the mean of its divisors is an integer number (5905476864).

Almost surely, 2^216466374740 is an apocalyptic number.

216466374740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216466374740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283462889472).

216466374740 is an abundant number, since it is smaller than the sum of its proper divisors (350459404204).

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

216466374740 is a wasteful number, since it uses less digits than its factorization.

216466374740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44037 (or 44035 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 50.

The spelling of 216466374740 in words is "two hundred sixteen billion, four hundred sixty-six million, three hundred seventy-four thousand, seven hundred forty".