26730156528 has 120 divisors (see below), whose sum is σ = 77006665008. Its totient is φ = 8651575296.

The previous prime is 26730156511. The next prime is 26730156539. The reversal of 26730156528 is 82565103762.

26730156528 is a `hidden beast` number, since 2 + 6 + 73 + 0 + 1 + 56 + 528 = 666.

It is a super-2 number, since 2×26730156528² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 722251 + ... + 758357.

Almost surely, 2^26730156528 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 26730156528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38503332504).

26730156528 is an abundant number, since it is smaller than the sum of its proper divisors (50276508480).

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

26730156528 is a wasteful number, since it uses less digits than its factorization.

26730156528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36271 (or 36262 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 26730156528 in words is "twenty-six billion, seven hundred thirty million, one hundred fifty-six thousand, five hundred twenty-eight".