16505651232 has 240 divisors, whose sum is σ = 55827680832. Its totient is φ = 4686128640.

The previous prime is 16505651213. The next prime is 16505651233. The reversal of 16505651232 is 23215650561.

16505651232 is a `hidden beast` number, since 1 + 6 + 50 + 565 + 12 + 32 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (16505651233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2954682 + ... + 2960262.

Almost surely, 2^16505651232 is an apocalyptic number.

16505651232 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 16505651232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27913840416).

16505651232 is an abundant number, since it is smaller than the sum of its proper divisors (39322029600).

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

16505651232 is a wasteful number, since it uses less digits than its factorization.

16505651232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5773 (or 5756 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 16505651232 in words is "sixteen billion, five hundred five million, six hundred fifty-one thousand, two hundred thirty-two".