16111887677 has 2 divisors, whose sum is σ = 16111887678. Its totient is φ = 16111887676.

The previous prime is 16111887667. The next prime is 16111887697. The reversal of 16111887677 is 77678811161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13538253316 + 2573634361 = 116354^2 + 50731^2 .

It is a cyclic number.

It is not a de Polignac number, because 16111887677 - 2²² = 16107693373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16111887607) 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 as a sum of consecutive naturals, namely, 8055943838 + 8055943839.

It is an arithmetic number, because the mean of its divisors is an integer number (8055943839).

Almost surely, 2^16111887677 is an apocalyptic number.

It is an amenable number.

16111887677 is a deficient number, since it is larger than the sum of its proper divisors (1).

16111887677 is an equidigital number, since it uses as much as digits as its factorization.

16111887677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 53.

The spelling of 16111887677 in words is "sixteen billion, one hundred eleven million, eight hundred eighty-seven thousand, six hundred seventy-seven".