26323655561 has 8 divisors (see below), whose sum is σ = 30099021120. Its totient is φ = 22552000848.

The previous prime is 26323655551. The next prime is 26323655573. The reversal of 26323655561 is 16555632362.

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 26323655561 - 2²⁶ = 26256546697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26323655531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912491 + ... + 940896.

It is an arithmetic number, because the mean of its divisors is an integer number (3762377640).

Almost surely, 2^26323655561 is an apocalyptic number.

It is an amenable number.

26323655561 is a deficient number, since it is larger than the sum of its proper divisors (3775365559).

26323655561 is a wasteful number, since it uses less digits than its factorization.

26323655561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855423.

The product of its digits is 972000, while the sum is 44.

The spelling of 26323655561 in words is "twenty-six billion, three hundred twenty-three million, six hundred fifty-five thousand, five hundred sixty-one".