26578540672 has 16 divisors (see below), whose sum is σ = 52949436750. Its totient is φ = 13289270272.

The previous prime is 26578540661. The next prime is 26578540693. The reversal of 26578540672 is 27604587562.

It can be written as a sum of positive squares in only one way, i.e., 16234837056 + 10343703616 = 127416^2 + 101704^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-3 number, since 3×26578540672³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103822297 + ... + 103822552.

Almost surely, 2^26578540672 is an apocalyptic number.

It is an amenable number.

26578540672 is a deficient number, since it is larger than the sum of its proper divisors (26370896078).

26578540672 is an equidigital number, since it uses as much as digits as its factorization.

26578540672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207644863 (or 207644851 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 26578540672 in words is "twenty-six billion, five hundred seventy-eight million, five hundred forty thousand, six hundred seventy-two".