16500051420 has 96 divisors (see below), whose sum is σ = 51044732928. Its totient is φ = 3961132032.

The previous prime is 16500051361. The next prime is 16500051427. The reversal of 16500051420 is 2415000561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16500051427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328204 + ... + 375123.

It is an arithmetic number, because the mean of its divisors is an integer number (531715968).

Almost surely, 2^16500051420 is an apocalyptic number.

16500051420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16500051420 is an abundant number, since it is smaller than the sum of its proper divisors (34544681508).

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

16500051420 is a wasteful number, since it uses less digits than its factorization.

16500051420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703379 (or 703377 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 16500051420 its reverse (2415000561), we get a palindrome (18915051981).

The spelling of 16500051420 in words is "sixteen billion, five hundred million, fifty-one thousand, four hundred twenty".