26980140097 has 2 divisors, whose sum is σ = 26980140098. Its totient is φ = 26980140096.

The previous prime is 26980140067. The next prime is 26980140113. The reversal of 26980140097 is 79004108962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14982004801 + 11998135296 = 122401^2 + 109536^2 .

It is a cyclic number.

It is not a de Polignac number, because 26980140097 - 2¹¹ = 26980138049 is a prime.

It is not a weakly prime, because it can be changed into another prime (26980140067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13490070048 + 13490070049.

It is an arithmetic number, because the mean of its divisors is an integer number (13490070049).

Almost surely, 2^26980140097 is an apocalyptic number.

It is an amenable number.

26980140097 is a deficient number, since it is larger than the sum of its proper divisors (1).

26980140097 is an equidigital number, since it uses as much as digits as its factorization.

26980140097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 26980140097 in words is "twenty-six billion, nine hundred eighty million, one hundred forty thousand, ninety-seven".