20271932545 has 4 divisors (see below), whose sum is σ = 24326319060. Its totient is φ = 16217546032.

The previous prime is 20271932531. The next prime is 20271932581. The reversal of 20271932545 is 54523917202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4433961744 + 15837970801 = 66588^2 + 125849^2 .

It is a cyclic number.

It is not a de Polignac number, because 20271932545 - 2¹⁵ = 20271899777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20271932498 and 20271932507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027193250 + ... + 2027193259.

It is an arithmetic number, because the mean of its divisors is an integer number (6081579765).

Almost surely, 2^20271932545 is an apocalyptic number.

It is an amenable number.

20271932545 is a deficient number, since it is larger than the sum of its proper divisors (4054386515).

20271932545 is an equidigital number, since it uses as much as digits as its factorization.

20271932545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054386514.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 20271932545 in words is "twenty billion, two hundred seventy-one million, nine hundred thirty-two thousand, five hundred forty-five".