20532445305 has 16 divisors (see below), whose sum is σ = 32926080960. Its totient is φ = 10925914688.

The previous prime is 20532445301. The next prime is 20532445313. The reversal of 20532445305 is 50354423502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20532445305 - 2² = 20532445301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20532445301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1538310 + ... + 1551599.

It is an arithmetic number, because the mean of its divisors is an integer number (2057880060).

Almost surely, 2^20532445305 is an apocalyptic number.

It is an amenable number.

20532445305 is a deficient number, since it is larger than the sum of its proper divisors (12393635655).

20532445305 is a wasteful number, since it uses less digits than its factorization.

20532445305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090360.

The product of its (nonzero) digits is 72000, while the sum is 33.

Adding to 20532445305 its reverse (50354423502), we get a palindrome (70886868807).

The spelling of 20532445305 in words is "twenty billion, five hundred thirty-two million, four hundred forty-five thousand, three hundred five".