26128452634 has 16 divisors (see below), whose sum is σ = 41510307816. Its totient is φ = 12292134400.

The previous prime is 26128452631. The next prime is 26128452659. The reversal of 26128452634 is 43625482162.

It can be written as a sum of positive squares in 4 ways, for example, as 16537188409 + 9591264225 = 128597^2 + 97935^2 .

It is not an unprimeable number, because it can be changed into a prime (26128452631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6654 + ... + 228694.

Almost surely, 2^26128452634 is an apocalyptic number.

26128452634 is a deficient number, since it is larger than the sum of its proper divisors (15381855182).

26128452634 is a wasteful number, since it uses less digits than its factorization.

26128452634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225521.

The product of its digits is 552960, while the sum is 43.

The spelling of 26128452634 in words is "twenty-six billion, one hundred twenty-eight million, four hundred fifty-two thousand, six hundred thirty-four".