108727997641 has 2 divisors, whose sum is σ = 108727997642. Its totient is φ = 108727997640.

The previous prime is 108727997611. The next prime is 108727997659. The reversal of 108727997641 is 146799727801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69272134416 + 39455863225 = 263196^2 + 198635^2 .

It is a cyclic number.

It is not a de Polignac number, because 108727997641 - 2¹⁹ = 108727473353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108727997641.

It is not a weakly prime, because it can be changed into another prime (108727997611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54363998820 + 54363998821.

It is an arithmetic number, because the mean of its divisors is an integer number (54363998821).

Almost surely, 2^108727997641 is an apocalyptic number.

It is an amenable number.

108727997641 is a deficient number, since it is larger than the sum of its proper divisors (1).

108727997641 is an equidigital number, since it uses as much as digits as its factorization.

108727997641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 108727997641 in words is "one hundred eight billion, seven hundred twenty-seven million, nine hundred ninety-seven thousand, six hundred forty-one".