26640869589732 has 96 divisors (see below), whose sum is σ = 64746924318720. Its totient is φ = 8515249948800.

The previous prime is 26640869589727. The next prime is 26640869589767. The reversal of 26640869589732 is 23798596804662.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227316613 + ... + 227433779.

It is an arithmetic number, because the mean of its divisors is an integer number (674447128320).

Almost surely, 2^{26640869589732} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26640869589732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32373462159360).

26640869589732 is an abundant number, since it is smaller than the sum of its proper divisors (38106054728988).

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

26640869589732 is a wasteful number, since it uses less digits than its factorization.

26640869589732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121681 (or 121679 counting only the distinct ones).

The product of its (nonzero) digits is 1881169920, while the sum is 75.

The spelling of 26640869589732 in words is "twenty-six trillion, six hundred forty billion, eight hundred sixty-nine million, five hundred eighty-nine thousand, seven hundred thirty-two".