16623201251 has 32 divisors (see below), whose sum is σ = 18283622400. Its totient is φ = 15060988800.

The previous prime is 16623201223. The next prime is 16623201293. The reversal of 16623201251 is 15210232661.

It is a cyclic number.

It is not a de Polignac number, because 16623201251 - 2⁶ = 16623201187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16623201211) 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, 7124081 + ... + 7126413.

It is an arithmetic number, because the mean of its divisors is an integer number (571363200).

Almost surely, 2^16623201251 is an apocalyptic number.

16623201251 is a deficient number, since it is larger than the sum of its proper divisors (1660421149).

16623201251 is a wasteful number, since it uses less digits than its factorization.

16623201251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 16623201251 in words is "sixteen billion, six hundred twenty-three million, two hundred one thousand, two hundred fifty-one".