109208812837 has 2 divisors, whose sum is σ = 109208812838. Its totient is φ = 109208812836.

The previous prime is 109208812777. The next prime is 109208812849. The reversal of 109208812837 is 738218802901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101688280996 + 7520531841 = 318886^2 + 86721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109208812837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109208818837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54604406418 + 54604406419.

It is an arithmetic number, because the mean of its divisors is an integer number (54604406419).

Almost surely, 2^109208812837 is an apocalyptic number.

It is an amenable number.

109208812837 is a deficient number, since it is larger than the sum of its proper divisors (1).

109208812837 is an equidigital number, since it uses as much as digits as its factorization.

109208812837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 49.

The spelling of 109208812837 in words is "one hundred nine billion, two hundred eight million, eight hundred twelve thousand, eight hundred thirty-seven".