16200917251 has 4 divisors (see below), whose sum is σ = 16759569600. Its totient is φ = 15642264904.

The previous prime is 16200917171. The next prime is 16200917279. The reversal of 16200917251 is 15271900261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16200917251 - 2¹⁷ = 16200786179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16200917351) 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, 279326131 + ... + 279326188.

It is an arithmetic number, because the mean of its divisors is an integer number (4189892400).

Almost surely, 2^16200917251 is an apocalyptic number.

16200917251 is a deficient number, since it is larger than the sum of its proper divisors (558652349).

16200917251 is an equidigital number, since it uses as much as digits as its factorization.

16200917251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558652348.

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 16200917251 in words is "sixteen billion, two hundred million, nine hundred seventeen thousand, two hundred fifty-one".