26064433920 has 576 divisors, whose sum is σ = 99320739840. Its totient is φ = 5701238784.

The previous prime is 26064433877. The next prime is 26064433937. The reversal of 26064433920 is 2933446062.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72602701 + ... + 72603059.

It is an arithmetic number, because the mean of its divisors is an integer number (172431840).

Almost surely, 2^26064433920 is an apocalyptic number.

26064433920 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 26064433920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49660369920).

26064433920 is an abundant number, since it is smaller than the sum of its proper divisors (73256305920).

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

26064433920 is a wasteful number, since it uses less digits than its factorization.

26064433920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 39.

Adding to 26064433920 its reverse (2933446062), we get a palindrome (28997879982).

The spelling of 26064433920 in words is "twenty-six billion, sixty-four million, four hundred thirty-three thousand, nine hundred twenty".