26992332161 has 2 divisors, whose sum is σ = 26992332162. Its totient is φ = 26992332160.

The previous prime is 26992332119. The next prime is 26992332173. The reversal of 26992332161 is 16123329962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17139784561 + 9852547600 = 130919^2 + 99260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26992332161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26992332181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13496166080 + 13496166081.

It is an arithmetic number, because the mean of its divisors is an integer number (13496166081).

Almost surely, 2^26992332161 is an apocalyptic number.

It is an amenable number.

26992332161 is a deficient number, since it is larger than the sum of its proper divisors (1).

26992332161 is an equidigital number, since it uses as much as digits as its factorization.

26992332161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The spelling of 26992332161 in words is "twenty-six billion, nine hundred ninety-two million, three hundred thirty-two thousand, one hundred sixty-one".