26727319081 has 2 divisors, whose sum is σ = 26727319082. Its totient is φ = 26727319080.

The previous prime is 26727319051. The next prime is 26727319117. The reversal of 26727319081 is 18091372762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26346483856 + 380835225 = 162316^2 + 19515^2 .

It is a cyclic number.

It is not a de Polignac number, because 26727319081 - 2¹⁷ = 26727188009 is a prime.

It is a super-2 number, since 2×26727319081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26727319051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13363659540 + 13363659541.

It is an arithmetic number, because the mean of its divisors is an integer number (13363659541).

Almost surely, 2^26727319081 is an apocalyptic number.

It is an amenable number.

26727319081 is a deficient number, since it is larger than the sum of its proper divisors (1).

26727319081 is an equidigital number, since it uses as much as digits as its factorization.

26727319081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 26727319081 in words is "twenty-six billion, seven hundred twenty-seven million, three hundred nineteen thousand, eighty-one".