26907904414681 has 2 divisors, whose sum is σ = 26907904414682. Its totient is φ = 26907904414680.

The previous prime is 26907904414679. The next prime is 26907904414697. The reversal of 26907904414681 is 18641440970962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19450040448400 + 7457863966281 = 4410220^2 + 2730909^2 .

It is a cyclic number.

It is not a de Polignac number, because 26907904414681 - 2¹ = 26907904414679 is a prime.

It is a super-4 number, since 4×26907904414681⁴ (a number of 55 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 26907904414679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26907902414681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13453952207340 + 13453952207341.

It is an arithmetic number, because the mean of its divisors is an integer number (13453952207341).

Almost surely, 2^{26907904414681} is an apocalyptic number.

It is an amenable number.

26907904414681 is a deficient number, since it is larger than the sum of its proper divisors (1).

26907904414681 is an equidigital number, since it uses as much as digits as its factorization.

26907904414681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 26907904414681 in words is "twenty-six trillion, nine hundred seven billion, nine hundred four million, four hundred fourteen thousand, six hundred eighty-one".