26628626650 has 24 divisors (see below), whose sum is σ = 49561364700. Its totient is φ = 10644543360.

The previous prime is 26628626623. The next prime is 26628626699. The reversal of 26628626650 is 5662682662.

It can be written as a sum of positive squares in 6 ways, for example, as 3200956929 + 23427669721 = 56577^2 + 153061^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26628626594 and 26628626603.

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, 94459 + ... + 249358.

Almost surely, 2^26628626650 is an apocalyptic number.

26628626650 is a deficient number, since it is larger than the sum of its proper divisors (22932738050).

26628626650 is a wasteful number, since it uses less digits than its factorization.

26628626650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345378 (or 345373 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 26628626650 in words is "twenty-six billion, six hundred twenty-eight million, six hundred twenty-six thousand, six hundred fifty".