108690471677 has 2 divisors, whose sum is σ = 108690471678. Its totient is φ = 108690471676.

The previous prime is 108690471661. The next prime is 108690471691. The reversal of 108690471677 is 776174096801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105970431961 + 2720039716 = 325531^2 + 52154^2 .

It is an emirp because it is prime and its reverse (776174096801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108690471677 - 2⁴ = 108690471661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108690471607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54345235838 + 54345235839.

It is an arithmetic number, because the mean of its divisors is an integer number (54345235839).

Almost surely, 2^108690471677 is an apocalyptic number.

It is an amenable number.

108690471677 is a deficient number, since it is larger than the sum of its proper divisors (1).

108690471677 is an equidigital number, since it uses as much as digits as its factorization.

108690471677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 56.

The spelling of 108690471677 in words is "one hundred eight billion, six hundred ninety million, four hundred seventy-one thousand, six hundred seventy-seven".