2010997807817 has 2 divisors, whose sum is σ = 2010997807818. Its totient is φ = 2010997807816.

The previous prime is 2010997807799. The next prime is 2010997807829. The reversal of 2010997807817 is 7187087990102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1604133703936 + 406864103881 = 1266544^2 + 637859^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010997807817 - 2¹² = 2010997803721 is a prime.

It is a super-2 number, since 2×2010997807817² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2010997806817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005498903908 + 1005498903909.

It is an arithmetic number, because the mean of its divisors is an integer number (1005498903909).

Almost surely, 2^{2010997807817} is an apocalyptic number.

It is an amenable number.

2010997807817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010997807817 is an equidigital number, since it uses as much as digits as its factorization.

2010997807817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 59.

The spelling of 2010997807817 in words is "two trillion, ten billion, nine hundred ninety-seven million, eight hundred seven thousand, eight hundred seventeen".