26321538551 has 8 divisors (see below), whose sum is σ = 32816463744. Its totient is φ = 20510289720.

The previous prime is 26321538541. The next prime is 26321538553. The reversal of 26321538551 is 15583512362.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26321538551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26321538499 and 26321538508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26321538553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170919005 + ... + 170919158.

It is an arithmetic number, because the mean of its divisors is an integer number (4102057968).

Almost surely, 2^26321538551 is an apocalyptic number.

26321538551 is a deficient number, since it is larger than the sum of its proper divisors (6494925193).

26321538551 is a wasteful number, since it uses less digits than its factorization.

26321538551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341838181.

The product of its digits is 216000, while the sum is 41.

The spelling of 26321538551 in words is "twenty-six billion, three hundred twenty-one million, five hundred thirty-eight thousand, five hundred fifty-one".