26417640606 has 64 divisors (see below), whose sum is σ = 61403105280. Its totient is φ = 7421207040.

The previous prime is 26417640583. The next prime is 26417640607. The reversal of 26417640606 is 60604671462.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26417640607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 783120 + ... + 816156.

It is an arithmetic number, because the mean of its divisors is an integer number (959423520).

Almost surely, 2^26417640606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26417640606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30701552640).

26417640606 is an abundant number, since it is smaller than the sum of its proper divisors (34985464674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26417640606 is a wasteful number, since it uses less digits than its factorization.

26417640606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33369.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 26417640606 in words is "twenty-six billion, four hundred seventeen million, six hundred forty thousand, six hundred six".