26742340901 has 4 divisors (see below), whose sum is σ = 27108674412. Its totient is φ = 26376007392.

The previous prime is 26742340873. The next prime is 26742340903. The reversal of 26742340901 is 10904324762.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10904324762 = 2 ⋅5452162381.

It can be written as a sum of positive squares in 2 ways, for example, as 18218250625 + 8524090276 = 134975^2 + 92326^2 .

It is a cyclic number.

It is not a de Polignac number, because 26742340901 - 2³⁴ = 9562471717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26742340903) 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, 183166646 + ... + 183166791.

It is an arithmetic number, because the mean of its divisors is an integer number (6777168603).

Almost surely, 2^26742340901 is an apocalyptic number.

It is an amenable number.

26742340901 is a deficient number, since it is larger than the sum of its proper divisors (366333511).

26742340901 is an equidigital number, since it uses as much as digits as its factorization.

26742340901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366333510.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 26742340901 in words is "twenty-six billion, seven hundred forty-two million, three hundred forty thousand, nine hundred one".