108475156681 has 2 divisors, whose sum is σ = 108475156682. Its totient is φ = 108475156680.

The previous prime is 108475156633. The next prime is 108475156697. The reversal of 108475156681 is 186651574801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71534316681 + 36940840000 = 267459^2 + 192200^2 .

It is a cyclic number.

It is not a de Polignac number, because 108475156681 - 2⁷ = 108475156553 is a prime.

It is a super-2 number, since 2×108475156681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (108475156781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54237578340 + 54237578341.

It is an arithmetic number, because the mean of its divisors is an integer number (54237578341).

Almost surely, 2^108475156681 is an apocalyptic number.

It is an amenable number.

108475156681 is a deficient number, since it is larger than the sum of its proper divisors (1).

108475156681 is an equidigital number, since it uses as much as digits as its factorization.

108475156681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 52.

The spelling of 108475156681 in words is "one hundred eight billion, four hundred seventy-five million, one hundred fifty-six thousand, six hundred eighty-one".