16561105151 has 2 divisors, whose sum is σ = 16561105152. Its totient is φ = 16561105150.

The previous prime is 16561105129. The next prime is 16561105201. The reversal of 16561105151 is 15150116561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16561105151 - 2⁶ = 16561105087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16561125151) 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 as a sum of consecutive naturals, namely, 8280552575 + 8280552576.

It is an arithmetic number, because the mean of its divisors is an integer number (8280552576).

Almost surely, 2^16561105151 is an apocalyptic number.

16561105151 is a deficient number, since it is larger than the sum of its proper divisors (1).

16561105151 is an equidigital number, since it uses as much as digits as its factorization.

16561105151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 16561105151 in words is "sixteen billion, five hundred sixty-one million, one hundred five thousand, one hundred fifty-one".