1026256566111 has 16 divisors (see below), whose sum is σ = 1564078504704. Its totient is φ = 586335207744.

The previous prime is 1026256566061. The next prime is 1026256566121. The reversal of 1026256566111 is 1116656526201.

It is not a de Polignac number, because 1026256566111 - 2⁶ = 1026256566047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026256566121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3916566 + ... + 4170371.

It is an arithmetic number, because the mean of its divisors is an integer number (97754906544).

Almost surely, 2^{1026256566111} is an apocalyptic number.

1026256566111 is a deficient number, since it is larger than the sum of its proper divisors (537821938593).

1026256566111 is an equidigital number, since it uses as much as digits as its factorization.

1026256566111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8092990.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 1026256566111 in words is "one trillion, twenty-six billion, two hundred fifty-six million, five hundred sixty-six thousand, one hundred eleven".