26861409082 has 4 divisors (see below), whose sum is σ = 40292113626. Its totient is φ = 13430704540.

The previous prime is 26861409059. The next prime is 26861409137. The reversal of 26861409082 is 28090416862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25728480801 + 1132928281 = 160401^2 + 33659^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715352269 + ... + 6715352272.

Almost surely, 2^26861409082 is an apocalyptic number.

26861409082 is a deficient number, since it is larger than the sum of its proper divisors (13430704544).

26861409082 is a wasteful number, since it uses less digits than its factorization.

26861409082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13430704543.

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

The spelling of 26861409082 in words is "twenty-six billion, eight hundred sixty-one million, four hundred nine thousand, eighty-two".