2118437452697 has 2 divisors, whose sum is σ = 2118437452698. Its totient is φ = 2118437452696.

The previous prime is 2118437452559. The next prime is 2118437452711. The reversal of 2118437452697 is 7962547348112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1666606122841 + 451831329856 = 1290971^2 + 672184^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118437452697 - 2¹⁶ = 2118437387161 is a prime.

It is a super-2 number, since 2×2118437452697² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2118437452097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059218726348 + 1059218726349.

It is an arithmetic number, because the mean of its divisors is an integer number (1059218726349).

Almost surely, 2^{2118437452697} is an apocalyptic number.

It is an amenable number.

2118437452697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118437452697 is an equidigital number, since it uses as much as digits as its factorization.

2118437452697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 59.

The spelling of 2118437452697 in words is "two trillion, one hundred eighteen billion, four hundred thirty-seven million, four hundred fifty-two thousand, six hundred ninety-seven".