26845687441 has 2 divisors, whose sum is σ = 26845687442. Its totient is φ = 26845687440.

The previous prime is 26845687357. The next prime is 26845687483. The reversal of 26845687441 is 14478654862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18571965841 + 8273721600 = 136279^2 + 90960^2 .

It is a cyclic number.

It is not a de Polignac number, because 26845687441 - 2¹¹ = 26845685393 is a prime.

It is not a weakly prime, because it can be changed into another prime (26845687541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13422843720 + 13422843721.

It is an arithmetic number, because the mean of its divisors is an integer number (13422843721).

Almost surely, 2^26845687441 is an apocalyptic number.

It is an amenable number.

26845687441 is a deficient number, since it is larger than the sum of its proper divisors (1).

26845687441 is an equidigital number, since it uses as much as digits as its factorization.

26845687441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10321920, while the sum is 55.

It can be divided in two parts, 26845687 and 441, that added together give a triangular number (26846128 = T₇₃₂₇).

The spelling of 26845687441 in words is "twenty-six billion, eight hundred forty-five million, six hundred eighty-seven thousand, four hundred forty-one".