26775612631 has 2 divisors, whose sum is σ = 26775612632. Its totient is φ = 26775612630.

The previous prime is 26775612613. The next prime is 26775612641. The reversal of 26775612631 is 13621657762.

Together with previous prime (26775612613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26775612631 - 2¹³ = 26775604439 is a prime.

It is a super-2 number, since 2×26775612631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26775612641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13387806315 + 13387806316.

It is an arithmetic number, because the mean of its divisors is an integer number (13387806316).

Almost surely, 2^26775612631 is an apocalyptic number.

26775612631 is a deficient number, since it is larger than the sum of its proper divisors (1).

26775612631 is an equidigital number, since it uses as much as digits as its factorization.

26775612631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The spelling of 26775612631 in words is "twenty-six billion, seven hundred seventy-five million, six hundred twelve thousand, six hundred thirty-one".