26200557656 has 32 divisors (see below), whose sum is σ = 60462827040. Its totient is φ = 10365055488.

The previous prime is 26200557637. The next prime is 26200557659. The reversal of 26200557656 is 65675500262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26200557659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17994161 + ... + 17995616.

It is an arithmetic number, because the mean of its divisors is an integer number (1889463345).

Almost surely, 2^26200557656 is an apocalyptic number.

26200557656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

26200557656 is an abundant number, since it is smaller than the sum of its proper divisors (34262269384).

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

26200557656 is a wasteful number, since it uses less digits than its factorization.

26200557656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35989803 (or 35989799 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 26200557656 in words is "twenty-six billion, two hundred million, five hundred fifty-seven thousand, six hundred fifty-six".