16506146500 has 48 divisors (see below), whose sum is σ = 36111479040. Its totient is φ = 6591093600.

The previous prime is 16506146497. The next prime is 16506146519. The reversal of 16506146500 is 564160561.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265381 + ... + 321619.

It is an arithmetic number, because the mean of its divisors is an integer number (752322480).

Almost surely, 2^16506146500 is an apocalyptic number.

16506146500 is a gapful number since it is divisible by the number (10) 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 16506146500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18055739520).

16506146500 is an abundant number, since it is smaller than the sum of its proper divisors (19605332540).

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

16506146500 is a wasteful number, since it uses less digits than its factorization.

16506146500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56845 (or 56833 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 16506146500 in words is "sixteen billion, five hundred six million, one hundred forty-six thousand, five hundred".