26664642606 has 16 divisors (see below), whose sum is σ = 60947754624. Its totient is φ = 7618469304.

The previous prime is 26664642593. The next prime is 26664642623. The reversal of 26664642606 is 60624646662.

It is a super-2 number, since 2×26664642606² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317436180 + ... + 317436263.

It is an arithmetic number, because the mean of its divisors is an integer number (3809234664).

Almost surely, 2^26664642606 is an apocalyptic number.

26664642606 is an abundant number, since it is smaller than the sum of its proper divisors (34283112018).

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

26664642606 is a wasteful number, since it uses less digits than its factorization.

26664642606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634872455.

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 26664642606 in words is "twenty-six billion, six hundred sixty-four million, six hundred forty-two thousand, six hundred six".