26561056756 has 48 divisors (see below), whose sum is σ = 50707407744. Its totient is φ = 12100035456.

The previous prime is 26561056747. The next prime is 26561056787. The reversal of 26561056756 is 65765016562.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6243126 + ... + 6247378.

It is an arithmetic number, because the mean of its divisors is an integer number (1056404328).

Almost surely, 2^26561056756 is an apocalyptic number.

26561056756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

26561056756 is a deficient number, since it is larger than the sum of its proper divisors (24146350988).

26561056756 is a wasteful number, since it uses less digits than its factorization.

26561056756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5800 (or 5798 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 26561056756 in words is "twenty-six billion, five hundred sixty-one million, fifty-six thousand, seven hundred fifty-six".