16721163750 has 80 divisors (see below), whose sum is σ = 43989168960. Its totient is φ = 4224276000.

The previous prime is 16721163713. The next prime is 16721163751. The reversal of 16721163750 is 5736112761.

It is a junction number, because it is equal to n+sod(n) for n = 16721163699 and 16721163708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16721163751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 46092 + ... + 188591.

It is an arithmetic number, because the mean of its divisors is an integer number (549864612).

Almost surely, 2^16721163750 is an apocalyptic number.

16721163750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16721163750 is an abundant number, since it is smaller than the sum of its proper divisors (27268005210).

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

16721163750 is a wasteful number, since it uses less digits than its factorization.

16721163750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234727 (or 234712 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 16721163750 in words is "sixteen billion, seven hundred twenty-one million, one hundred sixty-three thousand, seven hundred fifty".