16686817553077 has 32 divisors (see below), whose sum is σ = 19685962842624. Its totient is φ = 13849491552000.

The previous prime is 16686817553059. The next prime is 16686817553129. The reversal of 16686817553077 is 77035571868661.

It is a cyclic number.

It is not a de Polignac number, because 16686817553077 - 2⁷ = 16686817552949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16686817552997 and 16686817553015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16686817553047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10937523 + ... + 12369439.

It is an arithmetic number, because the mean of its divisors is an integer number (615186338832).

Almost surely, 2^{16686817553077} is an apocalyptic number.

It is an amenable number.

16686817553077 is a deficient number, since it is larger than the sum of its proper divisors (2999145289547).

16686817553077 is a wasteful number, since it uses less digits than its factorization.

16686817553077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432389.

The product of its (nonzero) digits is 355622400, while the sum is 70.

The spelling of 16686817553077 in words is "sixteen trillion, six hundred eighty-six billion, eight hundred seventeen million, five hundred fifty-three thousand, seventy-seven".