26130161801 has 4 divisors (see below), whose sum is σ = 26130554004. Its totient is φ = 26129769600.

The previous prime is 26130161789. The next prime is 26130161807. The reversal of 26130161801 is 10816103162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10816103162 = 2 ⋅5408051581.

It can be written as a sum of positive squares in 2 ways, for example, as 19802118400 + 6328043401 = 140720^2 + 79549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26130161801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26130161807) 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, 68480 + ... + 238641.

It is an arithmetic number, because the mean of its divisors is an integer number (6532638501).

Almost surely, 2^26130161801 is an apocalyptic number.

It is an amenable number.

26130161801 is a deficient number, since it is larger than the sum of its proper divisors (392203).

26130161801 is an equidigital number, since it uses as much as digits as its factorization.

26130161801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392202.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 26130161801 its reverse (10816103162), we get a palindrome (36946264963).

The spelling of 26130161801 in words is "twenty-six billion, one hundred thirty million, one hundred sixty-one thousand, eight hundred one".