26202220641 has 27 divisors (see below), whose sum is σ = 38389006929. Its totient is φ = 17221779432.

The previous prime is 26202220619. The next prime is 26202220651. The reversal of 26202220641 is 14602220262.

It is a happy number.

The square root of 26202220641 is 161871.

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

It is not a de Polignac number, because 26202220641 - 2¹⁷ = 26202089569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26202220651) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 38363086 + ... + 38363768.

Almost surely, 2^26202220641 is an apocalyptic number.

26202220641 is the 161871-st square number.

26202220641 is the 80936-th centered octagonal number.

It is an amenable number.

26202220641 is a deficient number, since it is larger than the sum of its proper divisors (12186786288).

26202220641 is an frugal number, since it uses more digits than its factorization.

26202220641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 26202220641 in words is "twenty-six billion, two hundred two million, two hundred twenty thousand, six hundred forty-one".