26805556453 has 8 divisors (see below), whose sum is σ = 28876087800. Its totient is φ = 24736248768.

The previous prime is 26805556451. The next prime is 26805556469. The reversal of 26805556453 is 35465550862.

It can be written as a sum of positive squares in 4 ways, for example, as 5494812129 + 21310744324 = 74127^2 + 145982^2 .

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 26805556453 - 2¹ = 26805556451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26805556397 and 26805556406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26805556451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260158 + ... + 348271.

It is an arithmetic number, because the mean of its divisors is an integer number (3609510975).

Almost surely, 2^26805556453 is an apocalyptic number.

It is an amenable number.

26805556453 is a deficient number, since it is larger than the sum of its proper divisors (2070531347).

26805556453 is a wasteful number, since it uses less digits than its factorization.

26805556453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611831.

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

The spelling of 26805556453 in words is "twenty-six billion, eight hundred five million, five hundred fifty-six thousand, four hundred fifty-three".