2087108311709 has 2 divisors, whose sum is σ = 2087108311710. Its totient is φ = 2087108311708.

The previous prime is 2087108311633. The next prime is 2087108311721. The reversal of 2087108311709 is 9071138017802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2034394447684 + 52713864025 = 1426322^2 + 229595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2087108311709 is a prime.

It is a super-2 number, since 2×2087108311709² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2087108311759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043554155854 + 1043554155855.

It is an arithmetic number, because the mean of its divisors is an integer number (1043554155855).

Almost surely, 2^{2087108311709} is an apocalyptic number.

It is an amenable number.

2087108311709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2087108311709 is an equidigital number, since it uses as much as digits as its factorization.

2087108311709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 2087108311709 in words is "two trillion, eighty-seven billion, one hundred eight million, three hundred eleven thousand, seven hundred nine".