26969428869 has 4 divisors (see below), whose sum is σ = 35959238496. Its totient is φ = 17979619244.

The previous prime is 26969428867. The next prime is 26969428873. The reversal of 26969428869 is 96882496962.

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.

It is a cyclic number.

It is not a de Polignac number, because 26969428869 - 2¹ = 26969428867 is a prime.

It is a super-2 number, since 2×26969428869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26969428867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4494904809 + ... + 4494904814.

It is an arithmetic number, because the mean of its divisors is an integer number (8989809624).

Almost surely, 2^26969428869 is an apocalyptic number.

It is an amenable number.

26969428869 is a deficient number, since it is larger than the sum of its proper divisors (8989809627).

26969428869 is an equidigital number, since it uses as much as digits as its factorization.

26969428869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989809626.

The product of its digits is 161243136, while the sum is 69.

The spelling of 26969428869 in words is "twenty-six billion, nine hundred sixty-nine million, four hundred twenty-eight thousand, eight hundred sixty-nine".