16627877677 has 2 divisors, whose sum is σ = 16627877678. Its totient is φ = 16627877676.

The previous prime is 16627877611. The next prime is 16627877687. The reversal of 16627877677 is 77677872661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12591308521 + 4036569156 = 112211^2 + 63534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16627877677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16627877687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8313938838 + 8313938839.

It is an arithmetic number, because the mean of its divisors is an integer number (8313938839).

Almost surely, 2^16627877677 is an apocalyptic number.

It is an amenable number.

16627877677 is a deficient number, since it is larger than the sum of its proper divisors (1).

16627877677 is an equidigital number, since it uses as much as digits as its factorization.

16627877677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58084992, while the sum is 64.

The spelling of 16627877677 in words is "sixteen billion, six hundred twenty-seven million, eight hundred seventy-seven thousand, six hundred seventy-seven".