16365553232 has 120 divisors (see below), whose sum is σ = 37637019648. Its totient is φ = 6752782080.

The previous prime is 16365553231. The next prime is 16365553247. The reversal of 16365553232 is 23235556361.

It is a self number, because there is not a number n which added to its sum of digits gives 16365553232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16365553231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41222858 + ... + 41223254.

Almost surely, 2^16365553232 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 16365553232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18818509824).

16365553232 is an abundant number, since it is smaller than the sum of its proper divisors (21271466416).

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

16365553232 is a wasteful number, since it uses less digits than its factorization.

16365553232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 820 counting only the distinct ones).

The product of its digits is 486000, while the sum is 41.

The spelling of 16365553232 in words is "sixteen billion, three hundred sixty-five million, five hundred fifty-three thousand, two hundred thirty-two".