26369827561 has 8 divisors (see below), whose sum is σ = 32876668224. Its totient is φ = 20547917520.

The previous prime is 26369827531. The next prime is 26369827619. The reversal of 26369827561 is 16572896362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26369827561 - 2²³ = 26361438953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26369827531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171232570 + ... + 171232723.

It is an arithmetic number, because the mean of its divisors is an integer number (4109583528).

Almost surely, 2^26369827561 is an apocalyptic number.

It is an amenable number.

26369827561 is a deficient number, since it is larger than the sum of its proper divisors (6506840663).

26369827561 is a wasteful number, since it uses less digits than its factorization.

26369827561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342465311.

The product of its digits is 6531840, while the sum is 55.

The spelling of 26369827561 in words is "twenty-six billion, three hundred sixty-nine million, eight hundred twenty-seven thousand, five hundred sixty-one".