26563761650 has 24 divisors (see below), whose sum is σ = 50340839364. Its totient is φ = 10425022400.

The previous prime is 26563761563. The next prime is 26563761673. The reversal of 26563761650 is 5616736562.

It can be written as a sum of positive squares in 6 ways, for example, as 18847720369 + 7716041281 = 137287^2 + 87841^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26563761595 and 26563761604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5009381 + ... + 5014680.

Almost surely, 2^26563761650 is an apocalyptic number.

26563761650 is a deficient number, since it is larger than the sum of its proper divisors (23777077714).

26563761650 is a wasteful number, since it uses less digits than its factorization.

26563761650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10024126 (or 10024121 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 26563761650 in words is "twenty-six billion, five hundred sixty-three million, seven hundred sixty-one thousand, six hundred fifty".