26865887003497 has 2 divisors, whose sum is σ = 26865887003498. Its totient is φ = 26865887003496.

The previous prime is 26865887003479. The next prime is 26865887003563. The reversal of 26865887003497 is 79430078856862.

Together with previous prime (26865887003479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18570962835216 + 8294924168281 = 4309404^2 + 2880091^2 .

It is a cyclic number.

It is not a de Polignac number, because 26865887003497 - 2³⁵ = 26831527265129 is a prime.

It is not a weakly prime, because it can be changed into another prime (26865887003897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13432943501748 + 13432943501749.

It is an arithmetic number, because the mean of its divisors is an integer number (13432943501749).

Almost surely, 2^{26865887003497} is an apocalyptic number.

It is an amenable number.

26865887003497 is a deficient number, since it is larger than the sum of its proper divisors (1).

26865887003497 is an equidigital number, since it uses as much as digits as its factorization.

26865887003497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 975421440, while the sum is 73.

The spelling of 26865887003497 in words is "twenty-six trillion, eight hundred sixty-five billion, eight hundred eighty-seven million, three thousand, four hundred ninety-seven".