16501120032 has 24 divisors (see below), whose sum is σ = 43315440336. Its totient is φ = 5500373312.

The previous prime is 16501120021. The next prime is 16501120037. The reversal of 16501120032 is 23002110561.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 16501119990 and 16501120008.

It is not an unprimeable number, because it can be changed into a prime (16501120037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85943238 + ... + 85943429.

It is an arithmetic number, because the mean of its divisors is an integer number (1804810014).

Almost surely, 2^16501120032 is an apocalyptic number.

16501120032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16501120032 is an abundant number, since it is smaller than the sum of its proper divisors (26814320304).

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

16501120032 is a wasteful number, since it uses less digits than its factorization.

16501120032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171886680 (or 171886672 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 16501120032 its reverse (23002110561), we get a palindrome (39503230593).

The spelling of 16501120032 in words is "sixteen billion, five hundred one million, one hundred twenty thousand, thirty-two".