26660004406 has 16 divisors (see below), whose sum is σ = 45776712960. Its totient is φ = 11407254120.

The previous prime is 26660004373. The next prime is 26660004487. The reversal of 26660004406 is 60440006662.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529530 + ... + 1546861.

It is an arithmetic number, because the mean of its divisors is an integer number (2861044560).

Almost surely, 2^26660004406 is an apocalyptic number.

26660004406 is a deficient number, since it is larger than the sum of its proper divisors (19116708554).

26660004406 is a wasteful number, since it uses less digits than its factorization.

26660004406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077019.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 26660004406 in words is "twenty-six billion, six hundred sixty million, four thousand, four hundred six".