26106974489 has 4 divisors (see below), whose sum is σ = 26107309824. Its totient is φ = 26106639156.

The previous prime is 26106974473. The next prime is 26106974497. The reversal of 26106974489 is 98447960162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 26106974489 - 2⁴ = 26106974473 is a prime.

It is a super-2 number, since 2×26106974489² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26106974459) 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 3 ways as a sum of consecutive naturals, for example, 16664 + ... + 229110.

It is an arithmetic number, because the mean of its divisors is an integer number (6526827456).

Almost surely, 2^26106974489 is an apocalyptic number.

It is an amenable number.

26106974489 is a deficient number, since it is larger than the sum of its proper divisors (335335).

26106974489 is a wasteful number, since it uses less digits than its factorization.

26106974489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335334.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 26106974489 in words is "twenty-six billion, one hundred six million, nine hundred seventy-four thousand, four hundred eighty-nine".