26423012729 has 4 divisors (see below), whose sum is σ = 26423339940. Its totient is φ = 26422685520.

The previous prime is 26423012683. The next prime is 26423012731. The reversal of 26423012729 is 92721032462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19542642025 + 6880370704 = 139795^2 + 82948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26423012729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26423012692 and 26423012701.

It is not an unprimeable number, because it can be changed into a prime (26423012129) 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, 53999 + ... + 236139.

It is an arithmetic number, because the mean of its divisors is an integer number (6605834985).

Almost surely, 2^26423012729 is an apocalyptic number.

It is an amenable number.

26423012729 is a deficient number, since it is larger than the sum of its proper divisors (327211).

26423012729 is a wasteful number, since it uses less digits than its factorization.

26423012729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327210.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 26423012729 in words is "twenty-six billion, four hundred twenty-three million, twelve thousand, seven hundred twenty-nine".