26005600664056 has 128 divisors (see below), whose sum is σ = 56652313132800. Its totient is φ = 11088408038400.

The previous prime is 26005600663901. The next prime is 26005600664081. The reversal of 26005600664056 is 65046600650062.

It is a super-2 number, since 2×26005600664056² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26005600663997 and 26005600664015.

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, 52177231 + ... + 52673281.

It is an arithmetic number, because the mean of its divisors is an integer number (442596196350).

Almost surely, 2^{26005600664056} is an apocalyptic number.

26005600664056 is a gapful number since it is divisible by the number (26) 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 26005600664056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28326156566400).

26005600664056 is an abundant number, since it is smaller than the sum of its proper divisors (30646712468744).

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

26005600664056 is a wasteful number, since it uses less digits than its factorization.

26005600664056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496749 (or 496745 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 26005600664056 in words is "twenty-six trillion, five billion, six hundred million, six hundred sixty-four thousand, fifty-six".