2113516697 has 2 divisors, whose sum is σ = 2113516698. Its totient is φ = 2113516696.

The previous prime is 2113516679. The next prime is 2113516709. The reversal of 2113516697 is 7966153112.

Together with previous prime (2113516679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1615155721 + 498360976 = 40189^2 + 22324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113516697 - 2¹⁸ = 2113254553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2113516297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056758348 + 1056758349.

It is an arithmetic number, because the mean of its divisors is an integer number (1056758349).

Almost surely, 2^2113516697 is an apocalyptic number.

It is an amenable number.

2113516697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113516697 is an equidigital number, since it uses as much as digits as its factorization.

2113516697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 2113516697 is about 45972.9996519696. Note that the first 3 decimals coincide. The cubic root of 2113516697 is about 1283.3207833633.

The spelling of 2113516697 in words is "two billion, one hundred thirteen million, five hundred sixteen thousand, six hundred ninety-seven".