26566502461 has 8 divisors (see below), whose sum is σ = 27035895744. Its totient is φ = 26099754240.

The previous prime is 26566502441. The next prime is 26566502467. The reversal of 26566502461 is 16420566562.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-26566502461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26566502467) 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, 640996 + ... + 681181.

It is an arithmetic number, because the mean of its divisors is an integer number (3379486968).

Almost surely, 2^26566502461 is an apocalyptic number.

It is an amenable number.

26566502461 is a deficient number, since it is larger than the sum of its proper divisors (469393283).

26566502461 is a wasteful number, since it uses less digits than its factorization.

26566502461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322531.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 26566502461 in words is "twenty-six billion, five hundred sixty-six million, five hundred two thousand, four hundred sixty-one".