26641763572356 has 81 divisors (see below), whose sum is σ = 67563499907631. Its totient is φ = 8851796642304.

The previous prime is 26641763572351. The next prime is 26641763572381. The reversal of 26641763572356 is 65327536714662.

The square root of 26641763572356 is 5161566.

It is a perfect power (a square), and thus also a powerful number.

26641763572356 is a `hidden beast` number, since 2 + 6 + 6 + 4 + 1 + 7 + 6 + 3 + 572 + 3 + 56 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4986887461956 + 21654876110400 = 2233134^2 + 4653480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26641763572293 and 26641763572302.

It is not an unprimeable number, because it can be changed into a prime (26641763572351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10932195570 + ... + 10932198006.

Almost surely, 2^{26641763572356} is an apocalyptic number.

26641763572356 is the 5161566-th square number.

It is an amenable number.

26641763572356 is an abundant number, since it is smaller than the sum of its proper divisors (40921736335275).

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

26641763572356 is an frugal number, since it uses more digits than its factorization.

26641763572356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590 (or 2795 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 63.

The spelling of 26641763572356 in words is "twenty-six trillion, six hundred forty-one billion, seven hundred sixty-three million, five hundred seventy-two thousand, three hundred fifty-six".