26615442066 has 8 divisors (see below), whose sum is σ = 53230884144. Its totient is φ = 8871814020.

The previous prime is 26615442031. The next prime is 26615442107. The reversal of 26615442066 is 66024451662.

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

26615442066 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 2217953500 + ... + 2217953511.

It is an arithmetic number, because the mean of its divisors is an integer number (6653860518).

Almost surely, 2^26615442066 is an apocalyptic number.

26615442066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

26615442066 is a wasteful number, since it uses less digits than its factorization.

26615442066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435907016.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 26615442066 in words is "twenty-six billion, six hundred fifteen million, four hundred forty-two thousand, sixty-six".