20497935241 has 27 divisors (see below), whose sum is σ = 24191066133. Its totient is φ = 17317964160.

The previous prime is 20497935239. The next prime is 20497935277. The reversal of 20497935241 is 14253979402.

The square root of 20497935241 is 143171.

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

It can be written as a sum of positive squares in 4 ways, for example, as 19355765625 + 1142169616 = 139125^2 + 33796^2 .

It is not a de Polignac number, because 20497935241 - 2¹ = 20497935239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20497935191 and 20497935200.

It is not an unprimeable number, because it can be changed into a prime (20497935221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 113248171 + ... + 113248351.

Almost surely, 2^20497935241 is an apocalyptic number.

20497935241 is the 143171-st square number.

20497935241 is the 71586-th centered octagonal number.

It is an amenable number.

20497935241 is a deficient number, since it is larger than the sum of its proper divisors (3693130892).

20497935241 is an frugal number, since it uses more digits than its factorization.

20497935241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 20497935241 in words is "twenty billion, four hundred ninety-seven million, nine hundred thirty-five thousand, two hundred forty-one".