26166124421011 has 4 divisors (see below), whose sum is σ = 26209807434000. Its totient is φ = 26122441408024.

The previous prime is 26166124420901. The next prime is 26166124421023. The reversal of 26166124421011 is 11012442166162.

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 26166124421011 - 2¹³ = 26166124412819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26116124421011) 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, 21841505596 + ... + 21841506793.

It is an arithmetic number, because the mean of its divisors is an integer number (6552451858500).

Almost surely, 2^{26166124421011} is an apocalyptic number.

26166124421011 is a deficient number, since it is larger than the sum of its proper divisors (43683012989).

26166124421011 is an equidigital number, since it uses as much as digits as its factorization.

26166124421011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43683012988.

The product of its (nonzero) digits is 27648, while the sum is 37.

Adding to 26166124421011 its reverse (11012442166162), we get a palindrome (37178566587173).

The spelling of 26166124421011 in words is "twenty-six trillion, one hundred sixty-six billion, one hundred twenty-four million, four hundred twenty-one thousand, eleven".