26805555057 has 16 divisors (see below), whose sum is σ = 36778898880. Its totient is φ = 17353190592.

The previous prime is 26805555047. The next prime is 26805555071. The reversal of 26805555057 is 75055550862.

It is not a de Polignac number, because 26805555057 - 2⁴ = 26805555041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26805554997 and 26805555015.

It is not an unprimeable number, because it can be changed into a prime (26805555047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180723 + ... + 293720.

It is an arithmetic number, because the mean of its divisors is an integer number (2298681180).

Almost surely, 2^26805555057 is an apocalyptic number.

It is an amenable number.

26805555057 is a deficient number, since it is larger than the sum of its proper divisors (9973343823).

26805555057 is a wasteful number, since it uses less digits than its factorization.

26805555057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474992.

The product of its (nonzero) digits is 2100000, while the sum is 48.

The spelling of 26805555057 in words is "twenty-six billion, eight hundred five million, five hundred fifty-five thousand, fifty-seven".