26729963389 has 4 divisors (see below), whose sum is σ = 26841804480. Its totient is φ = 26618122300.

The previous prime is 26729963369. The next prime is 26729963417. The reversal of 26729963389 is 98336992762.

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 26729963389 - 2¹⁵ = 26729930621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26729963389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26729963369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55920187 + ... + 55920664.

It is an arithmetic number, because the mean of its divisors is an integer number (6710451120).

Almost surely, 2^26729963389 is an apocalyptic number.

It is an amenable number.

26729963389 is a deficient number, since it is larger than the sum of its proper divisors (111841091).

26729963389 is a wasteful number, since it uses less digits than its factorization.

26729963389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111841090.

The product of its digits is 52907904, while the sum is 64.

The spelling of 26729963389 in words is "twenty-six billion, seven hundred twenty-nine million, nine hundred sixty-three thousand, three hundred eighty-nine".