26785346069 has 4 divisors (see below), whose sum is σ = 26785698240. Its totient is φ = 26784993900.

The previous prime is 26785346039. The next prime is 26785346179. The reversal of 26785346069 is 96064358762.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96064358762 = 2 ⋅48032179381.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26785346069 is a prime.

It is a super-2 number, since 2×26785346069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26785346039) 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, 9407 + ... + 231644.

It is an arithmetic number, because the mean of its divisors is an integer number (6696424560).

Almost surely, 2^26785346069 is an apocalyptic number.

It is an amenable number.

26785346069 is a deficient number, since it is larger than the sum of its proper divisors (352171).

26785346069 is a wasteful number, since it uses less digits than its factorization.

26785346069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352170.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 26785346069 in words is "twenty-six billion, seven hundred eighty-five million, three hundred forty-six thousand, sixty-nine".