26721388321152 has 512 divisors, whose sum is σ = 92172957696000. Its totient is φ = 6679811432448.

The previous prime is 26721388321087. The next prime is 26721388321163. The reversal of 26721388321152 is 25112388312762.

It is a junction number, because it is equal to n+sod(n) for n = 26721388321095 and 26721388321104.

It is a congruent number.

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, 33672813 + ... + 34457235.

It is an arithmetic number, because the mean of its divisors is an integer number (180025308000).

Almost surely, 2^{26721388321152} 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 26721388321152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46086478848000).

26721388321152 is an abundant number, since it is smaller than the sum of its proper divisors (65451569374848).

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

26721388321152 is a wasteful number, since it uses less digits than its factorization.

26721388321152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784518 (or 784506 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The spelling of 26721388321152 in words is "twenty-six trillion, seven hundred twenty-one billion, three hundred eighty-eight million, three hundred twenty-one thousand, one hundred fifty-two".