26026430644 has 6 divisors (see below), whose sum is σ = 45546253634. Its totient is φ = 13013215320.

The previous prime is 26026430611. The next prime is 26026430699. The reversal of 26026430644 is 44603462062.

It can be written as a sum of positive squares in only one way, i.e., 15722150544 + 10304280100 = 125388^2 + 101510^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3253303827 + ... + 3253303834.

Almost surely, 2^26026430644 is an apocalyptic number.

It is an amenable number.

26026430644 is a deficient number, since it is larger than the sum of its proper divisors (19519822990).

26026430644 is a wasteful number, since it uses less digits than its factorization.

26026430644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6506607665 (or 6506607663 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 26026430644 in words is "twenty-six billion, twenty-six million, four hundred thirty thousand, six hundred forty-four".