2117712697237 has 2 divisors, whose sum is σ = 2117712697238. Its totient is φ = 2117712697236.

The previous prime is 2117712697229. The next prime is 2117712697267. The reversal of 2117712697237 is 7327962177112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1094396345956 + 1023316351281 = 1046134^2 + 1011591^2 .

It is a cyclic number.

It is not a de Polignac number, because 2117712697237 - 2³ = 2117712697229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2117712697267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058856348618 + 1058856348619.

It is an arithmetic number, because the mean of its divisors is an integer number (1058856348619).

Almost surely, 2^{2117712697237} is an apocalyptic number.

It is an amenable number.

2117712697237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2117712697237 is an equidigital number, since it uses as much as digits as its factorization.

2117712697237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3111696, while the sum is 55.

The spelling of 2117712697237 in words is "two trillion, one hundred seventeen billion, seven hundred twelve million, six hundred ninety-seven thousand, two hundred thirty-seven".