26545466551 has 4 divisors (see below), whose sum is σ = 26562090232. Its totient is φ = 26528842872.

The previous prime is 26545466539. The next prime is 26545466573. The reversal of 26545466551 is 15566454562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26545466551 - 2²¹ = 26543369399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26545466495 and 26545466504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26545466251) 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, 8309445 + ... + 8312638.

It is an arithmetic number, because the mean of its divisors is an integer number (6640522558).

Almost surely, 2^26545466551 is an apocalyptic number.

26545466551 is a deficient number, since it is larger than the sum of its proper divisors (16623681).

26545466551 is a wasteful number, since it uses less digits than its factorization.

26545466551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16623680.

The product of its digits is 4320000, while the sum is 49.

The spelling of 26545466551 in words is "twenty-six billion, five hundred forty-five million, four hundred sixty-six thousand, five hundred fifty-one".