26985143104 has 56 divisors (see below), whose sum is σ = 56892459240. Its totient is φ = 12675188736.

The previous prime is 26985143083. The next prime is 26985143111. The reversal of 26985143104 is 40134158962.

It can be written as a sum of positive squares in 4 ways, for example, as 5104816704 + 21880326400 = 71448^2 + 147920^2 .

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 127807 + ... + 265150.

Almost surely, 2^26985143104 is an apocalyptic number.

It is an amenable number.

26985143104 is an abundant number, since it is smaller than the sum of its proper divisors (29907316136).

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

26985143104 is a wasteful number, since it uses less digits than its factorization.

26985143104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393035 (or 393025 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 26985143104 in words is "twenty-six billion, nine hundred eighty-five million, one hundred forty-three thousand, one hundred four".