26128284037256 has 8 divisors (see below), whose sum is σ = 48990532569870. Its totient is φ = 13064142018624.

The previous prime is 26128284037249. The next prime is 26128284037351. The reversal of 26128284037256 is 65273048282162.

It can be written as a sum of positive squares in only one way, i.e., 21762131700100 + 4366152337156 = 4664990^2 + 2089534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1633017752321 + ... + 1633017752336.

Almost surely, 2^{26128284037256} is an apocalyptic number.

It is an amenable number.

26128284037256 is a deficient number, since it is larger than the sum of its proper divisors (22862248532614).

26128284037256 is a wasteful number, since it uses less digits than its factorization.

26128284037256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266035504663 (or 3266035504659 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 56.

The spelling of 26128284037256 in words is "twenty-six trillion, one hundred twenty-eight billion, two hundred eighty-four million, thirty-seven thousand, two hundred fifty-six".