16217055077 has 2 divisors, whose sum is σ = 16217055078. Its totient is φ = 16217055076.

The previous prime is 16217055059. The next prime is 16217055121. The reversal of 16217055077 is 77055071261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14573076961 + 1643978116 = 120719^2 + 40546^2 .

It is a cyclic number.

It is not a de Polignac number, because 16217055077 - 2¹⁶ = 16216989541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16217055037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8108527538 + 8108527539.

It is an arithmetic number, because the mean of its divisors is an integer number (8108527539).

Almost surely, 2^16217055077 is an apocalyptic number.

It is an amenable number.

16217055077 is a deficient number, since it is larger than the sum of its proper divisors (1).

16217055077 is an equidigital number, since it uses as much as digits as its factorization.

16217055077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102900, while the sum is 41.

The spelling of 16217055077 in words is "sixteen billion, two hundred seventeen million, fifty-five thousand, seventy-seven".