26436205261 has 8 divisors (see below), whose sum is σ = 26862902144. Its totient is φ = 26012778480.

The previous prime is 26436205259. The next prime is 26436205309. The reversal of 26436205261 is 16250263462.

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 26436205261 - 2¹ = 26436205259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26436205261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26436205241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801225 + ... + 833566.

It is an arithmetic number, because the mean of its divisors is an integer number (3357862768).

Almost surely, 2^26436205261 is an apocalyptic number.

It is an amenable number.

26436205261 is a deficient number, since it is larger than the sum of its proper divisors (426696883).

26436205261 is a wasteful number, since it uses less digits than its factorization.

26436205261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635051.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 26436205261 in words is "twenty-six billion, four hundred thirty-six million, two hundred five thousand, two hundred sixty-one".