26557703658011 has 8 divisors (see below), whose sum is σ = 27474198181200. Its totient is φ = 25641256577440.

The previous prime is 26557703657993. The next prime is 26557703658037. The reversal of 26557703658011 is 11085630775562.

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 26557703658011 - 2³⁸ = 26282825751067 is a prime.

It is a super-2 number, since 2×26557703658011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26557700658011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10719905 + ... + 12962706.

It is an arithmetic number, because the mean of its divisors is an integer number (3434274772650).

Almost surely, 2^{26557703658011} is an apocalyptic number.

26557703658011 is a deficient number, since it is larger than the sum of its proper divisors (916494523189).

26557703658011 is a wasteful number, since it uses less digits than its factorization.

26557703658011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23721309.

The product of its (nonzero) digits is 10584000, while the sum is 56.

The spelling of 26557703658011 in words is "twenty-six trillion, five hundred fifty-seven billion, seven hundred three million, six hundred fifty-eight thousand, eleven".