26442646261 has 8 divisors (see below), whose sum is σ = 26514259200. Its totient is φ = 26371096752.

The previous prime is 26442646213. The next prime is 26442646271. The reversal of 26442646261 is 16264624462.

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 26442646261 - 2⁷ = 26442646133 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 (26442646271) 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, 887736 + ... + 917038.

It is an arithmetic number, because the mean of its divisors is an integer number (3314282400).

Almost surely, 2^26442646261 is an apocalyptic number.

It is an amenable number.

26442646261 is a deficient number, since it is larger than the sum of its proper divisors (71612939).

26442646261 is a wasteful number, since it uses less digits than its factorization.

26442646261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31715.

The product of its digits is 663552, while the sum is 43.

The spelling of 26442646261 in words is "twenty-six billion, four hundred forty-two million, six hundred forty-six thousand, two hundred sixty-one".