2106897356737 has 2 divisors, whose sum is σ = 2106897356738. Its totient is φ = 2106897356736.

The previous prime is 2106897356713. The next prime is 2106897356741. The reversal of 2106897356737 is 7376537986012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2094202602496 + 12694754241 = 1447136^2 + 112671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106897356737 is a prime.

It is not a weakly prime, because it can be changed into another prime (2106897356537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053448678368 + 1053448678369.

It is an arithmetic number, because the mean of its divisors is an integer number (1053448678369).

Almost surely, 2^{2106897356737} is an apocalyptic number.

It is an amenable number.

2106897356737 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106897356737 is an equidigital number, since it uses as much as digits as its factorization.

2106897356737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80015040, while the sum is 64.

The spelling of 2106897356737 in words is "two trillion, one hundred six billion, eight hundred ninety-seven million, three hundred fifty-six thousand, seven hundred thirty-seven".