16664627411077 has 2 divisors, whose sum is σ = 16664627411078. Its totient is φ = 16664627411076.

The previous prime is 16664627411071. The next prime is 16664627411083. The reversal of 16664627411077 is 77011472646661.

It is a balanced prime because it is at equal distance from previous prime (16664627411071) and next prime (16664627411083).

It can be written as a sum of positive squares in only one way, i.e., 11675519966916 + 4989107444161 = 3416946^2 + 2233631^2 .

It is a cyclic number.

It is not a de Polignac number, because 16664627411077 - 2¹⁵ = 16664627378309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16664627411071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8332313705538 + 8332313705539.

It is an arithmetic number, because the mean of its divisors is an integer number (8332313705539).

Almost surely, 2^{16664627411077} is an apocalyptic number.

It is an amenable number.

16664627411077 is a deficient number, since it is larger than the sum of its proper divisors (1).

16664627411077 is an equidigital number, since it uses as much as digits as its factorization.

16664627411077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 16664627411077 in words is "sixteen trillion, six hundred sixty-four billion, six hundred twenty-seven million, four hundred eleven thousand, seventy-seven".