26865887003563 has 2 divisors, whose sum is σ = 26865887003564. Its totient is φ = 26865887003562.

The previous prime is 26865887003497. The next prime is 26865887003567. The reversal of 26865887003563 is 36530078856862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26865887003563 - 2⁴¹ = 24666863748011 is a prime.

It is not a weakly prime, because it can be changed into another prime (26865887003567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13432943501781 + 13432943501782.

It is an arithmetic number, because the mean of its divisors is an integer number (13432943501782).

Almost surely, 2^{26865887003563} is an apocalyptic number.

26865887003563 is a deficient number, since it is larger than the sum of its proper divisors (1).

26865887003563 is an equidigital number, since it uses as much as digits as its factorization.

26865887003563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 348364800, while the sum is 67.

The spelling of 26865887003563 in words is "twenty-six trillion, eight hundred sixty-five billion, eight hundred eighty-seven million, three thousand, five hundred sixty-three".