26416666663 has 8 divisors (see below), whose sum is σ = 28485238320. Its totient is φ = 24415917120.

The previous prime is 26416666657. The next prime is 26416666691. The reversal of 26416666663 is 36666661462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26416666663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26416666663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26416666613) 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, 16954720 + ... + 16956277.

It is an arithmetic number, because the mean of its divisors is an integer number (3560654790).

Almost surely, 2^26416666663 is an apocalyptic number.

26416666663 is a deficient number, since it is larger than the sum of its proper divisors (2068571657).

26416666663 is a wasteful number, since it uses less digits than its factorization.

26416666663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33911057.

The product of its digits is 6718464, while the sum is 52.

The spelling of 26416666663 in words is "twenty-six billion, four hundred sixteen million, six hundred sixty-six thousand, six hundred sixty-three".