16551110551 has 2 divisors, whose sum is σ = 16551110552. Its totient is φ = 16551110550.

The previous prime is 16551110533. The next prime is 16551110561. The reversal of 16551110551 is 15501115561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16551110551 - 2¹⁷ = 16550979479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16551110561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8275555275 + 8275555276.

It is an arithmetic number, because the mean of its divisors is an integer number (8275555276).

Almost surely, 2^16551110551 is an apocalyptic number.

16551110551 is a deficient number, since it is larger than the sum of its proper divisors (1).

16551110551 is an equidigital number, since it uses as much as digits as its factorization.

16551110551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 31.

The spelling of 16551110551 in words is "sixteen billion, five hundred fifty-one million, one hundred ten thousand, five hundred fifty-one".