26743506556 has 24 divisors (see below), whose sum is σ = 50511555920. Its totient is φ = 12316136832.

The previous prime is 26743506551. The next prime is 26743506577. The reversal of 26743506556 is 65560534762.

It is a super-2 number, since 2×26743506556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26743506551) 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, 538926 + ... + 586453.

Almost surely, 2^26743506556 is an apocalyptic number.

26743506556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

26743506556 is a deficient number, since it is larger than the sum of its proper divisors (23768049364).

26743506556 is a wasteful number, since it uses less digits than its factorization.

26743506556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125853 (or 1125851 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 49.

The spelling of 26743506556 in words is "twenty-six billion, seven hundred forty-three million, five hundred six thousand, five hundred fifty-six".