26086886640 has 60 divisors (see below), whose sum is σ = 87608463384. Its totient is φ = 6956502912.

The previous prime is 26086886599. The next prime is 26086886641. The reversal of 26086886640 is 4668868062.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26086886641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18115174 + ... + 18116613.

Almost surely, 2^26086886640 is an apocalyptic number.

26086886640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26086886640 is an abundant number, since it is smaller than the sum of its proper divisors (61521576744).

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

26086886640 is a wasteful number, since it uses less digits than its factorization.

26086886640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36231806 (or 36231797 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 26086886640 in words is "twenty-six billion, eighty-six million, eight hundred eighty-six thousand, six hundred forty".