26661162101 has 12 divisors (see below), whose sum is σ = 32838359148. Its totient is φ = 21508163712.

The previous prime is 26661162079. The next prime is 26661162119. The reversal of 26661162101 is 10126116662.

It can be written as a sum of positive squares in 2 ways, for example, as 24203580625 + 2457581476 = 155575^2 + 49574^2 .

It is not a de Polignac number, because 26661162101 - 2¹⁴ = 26661145717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26661162401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16002266 + ... + 16003931.

It is an arithmetic number, because the mean of its divisors is an integer number (2736529929).

Almost surely, 2^26661162101 is an apocalyptic number.

It is an amenable number.

26661162101 is a deficient number, since it is larger than the sum of its proper divisors (6177197047).

26661162101 is a wasteful number, since it uses less digits than its factorization.

26661162101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32006228 (or 32006221 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

Adding to 26661162101 its reverse (10126116662), we get a palindrome (36787278763).

The spelling of 26661162101 in words is "twenty-six billion, six hundred sixty-one million, one hundred sixty-two thousand, one hundred one".