26529620256 has 144 divisors (see below), whose sum is σ = 78323420448. Its totient is φ = 8833536000.

The previous prime is 26529620237. The next prime is 26529620267. The reversal of 26529620256 is 65202692562.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-4 number, since 4×26529620256⁴ (a number of 43 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12448311 + ... + 12450441.

It is an arithmetic number, because the mean of its divisors is an integer number (543912642).

Almost surely, 2^26529620256 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 26529620256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39161710224).

26529620256 is an abundant number, since it is smaller than the sum of its proper divisors (51793800192).

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

26529620256 is a wasteful number, since it uses less digits than its factorization.

26529620256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757 (or 3737 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 26529620256 in words is "twenty-six billion, five hundred twenty-nine million, six hundred twenty thousand, two hundred fifty-six".