26100666516997 has 2 divisors, whose sum is σ = 26100666516998. Its totient is φ = 26100666516996.

The previous prime is 26100666516979. The next prime is 26100666517019. The reversal of 26100666516997 is 79961566600162.

Together with previous prime (26100666516979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14296762583236 + 11803903933761 = 3781106^2 + 3435681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26100666516997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26100666516937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13050333258498 + 13050333258499.

It is an arithmetic number, because the mean of its divisors is an integer number (13050333258499).

Almost surely, 2^{26100666516997} is an apocalyptic number.

It is an amenable number.

26100666516997 is a deficient number, since it is larger than the sum of its proper divisors (1).

26100666516997 is an equidigital number, since it uses as much as digits as its factorization.

26100666516997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44089920, while the sum is 64.

The spelling of 26100666516997 in words is "twenty-six trillion, one hundred billion, six hundred sixty-six million, five hundred sixteen thousand, nine hundred ninety-seven".