26149800682 has 16 divisors (see below), whose sum is σ = 39589641000. Its totient is φ = 12953705920.

The previous prime is 26149800679. The next prime is 26149800701. The reversal of 26149800682 is 28600894162.

It is a Cunningham number, because it is equal to 161709²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 14933084401 + 11216716281 = 122201^2 + 105909^2 .

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, 3132 + ... + 228712.

Almost surely, 2^26149800682 is an apocalyptic number.

26149800682 is a deficient number, since it is larger than the sum of its proper divisors (13439840318).

26149800682 is a wasteful number, since it uses less digits than its factorization.

26149800682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226121.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 26149800682 in words is "twenty-six billion, one hundred forty-nine million, eight hundred thousand, six hundred eighty-two".