16217630352 has 720 divisors, whose sum is σ = 63013199040. Its totient is φ = 3948134400.

The previous prime is 16217630333. The next prime is 16217630383. The reversal of 16217630352 is 25303671261.

16217630352 is a `hidden beast` number, since 1 + 6 + 2 + 17 + 630 + 3 + 5 + 2 = 666.

It is a super-2 number, since 2×16217630352² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 67292952 + ... + 67293192.

It is an arithmetic number, because the mean of its divisors is an integer number (87518332).

Almost surely, 2^16217630352 is an apocalyptic number.

16217630352 is a gapful number since it is divisible by the number (12) 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 16217630352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31506599520).

16217630352 is an abundant number, since it is smaller than the sum of its proper divisors (46795568688).

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

16217630352 is a wasteful number, since it uses less digits than its factorization.

16217630352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 16217630352 in words is "sixteen billion, two hundred seventeen million, six hundred thirty thousand, three hundred fifty-two".