26220305684 has 6 divisors (see below), whose sum is σ = 45885534954. Its totient is φ = 13110152840.

The previous prime is 26220305663. The next prime is 26220305689. The reversal of 26220305684 is 48650302262.

It can be written as a sum of positive squares in only one way, i.e., 23051741584 + 3168564100 = 151828^2 + 56290^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26220305689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277538207 + ... + 3277538214.

It is an arithmetic number, because the mean of its divisors is an integer number (7647589159).

Almost surely, 2^26220305684 is an apocalyptic number.

It is an amenable number.

26220305684 is a deficient number, since it is larger than the sum of its proper divisors (19665229270).

26220305684 is a wasteful number, since it uses less digits than its factorization.

26220305684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555076425 (or 6555076423 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 26220305684 in words is "twenty-six billion, two hundred twenty million, three hundred five thousand, six hundred eighty-four".