26434044660 has 96 divisors (see below), whose sum is σ = 75368240640. Its totient is φ = 6920926848.

The previous prime is 26434044631. The next prime is 26434044683. The reversal of 26434044660 is 6644043462.

It is a congruent number.

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, 1223431 + ... + 1244849.

It is an arithmetic number, because the mean of its divisors is an integer number (785085840).

Almost surely, 2^26434044660 is an apocalyptic number.

26434044660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26434044660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37684120320).

26434044660 is an abundant number, since it is smaller than the sum of its proper divisors (48934195980).

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

26434044660 is a wasteful number, since it uses less digits than its factorization.

26434044660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21805 (or 21803 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 39.

The spelling of 26434044660 in words is "twenty-six billion, four hundred thirty-four million, forty-four thousand, six hundred sixty".