16218187632 has 160 divisors (see below), whose sum is σ = 47981928960. Its totient is φ = 5241669120.

The previous prime is 16218187627. The next prime is 16218187693. The reversal of 16218187632 is 23678181261.

16218187632 is a `hidden beast` number, since 1 + 6 + 2 + 1 + 8 + 1 + 8 + 7 + 632 = 666.

It is a super-2 number, since 2×16218187632² (a number of 21 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 31 ways as a sum of consecutive naturals, for example, 2955163 + ... + 2960645.

It is an arithmetic number, because the mean of its divisors is an integer number (299887056).

Almost surely, 2^16218187632 is an apocalyptic number.

16218187632 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 16218187632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23990964480).

16218187632 is an abundant number, since it is smaller than the sum of its proper divisors (31763741328).

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

16218187632 is a wasteful number, since it uses less digits than its factorization.

16218187632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5708 (or 5696 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 16218187632 in words is "sixteen billion, two hundred eighteen million, one hundred eighty-seven thousand, six hundred thirty-two".