108197877637 has 2 divisors, whose sum is σ = 108197877638. Its totient is φ = 108197877636.

The previous prime is 108197877523. The next prime is 108197877709. The reversal of 108197877637 is 736778791801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85167083556 + 23030794081 = 291834^2 + 151759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108197877637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108197877037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54098938818 + 54098938819.

It is an arithmetic number, because the mean of its divisors is an integer number (54098938819).

Almost surely, 2^108197877637 is an apocalyptic number.

It is an amenable number.

108197877637 is a deficient number, since it is larger than the sum of its proper divisors (1).

108197877637 is an equidigital number, since it uses as much as digits as its factorization.

108197877637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24893568, while the sum is 64.

The spelling of 108197877637 in words is "one hundred eight billion, one hundred ninety-seven million, eight hundred seventy-seven thousand, six hundred thirty-seven".