16663243632 has 160 divisors (see below), whose sum is σ = 52269273600. Its totient is φ = 4472423424.

The previous prime is 16663243631. The next prime is 16663243633. The reversal of 16663243632 is 23634236661.

It is an interprime number because it is at equal distance from previous prime (16663243631) and next prime (16663243633).

It is a super-3 number, since 3×16663243632³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663243631) 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, 337419 + ... + 383637.

It is an arithmetic number, because the mean of its divisors is an integer number (326682960).

Almost surely, 2^16663243632 is an apocalyptic number.

16663243632 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 16663243632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26134636800).

16663243632 is an abundant number, since it is smaller than the sum of its proper divisors (35606029968).

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

16663243632 is a wasteful number, since it uses less digits than its factorization.

16663243632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46303 (or 46297 counting only the distinct ones).

The product of its digits is 559872, while the sum is 42.

The spelling of 16663243632 in words is "sixteen billion, six hundred sixty-three million, two hundred forty-three thousand, six hundred thirty-two".