20271130562 has 4 divisors (see below), whose sum is σ = 30406695846. Its totient is φ = 10135565280.

The previous prime is 20271130559. The next prime is 20271130631. The reversal of 20271130562 is 26503117202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26503117202 = 2 ⋅13251558601.

It can be written as a sum of positive squares in only one way, i.e., 12436933441 + 7834197121 = 111521^2 + 88511^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067782639 + ... + 5067782642.

Almost surely, 2^20271130562 is an apocalyptic number.

20271130562 is a deficient number, since it is larger than the sum of its proper divisors (10135565284).

20271130562 is a wasteful number, since it uses less digits than its factorization.

20271130562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10135565283.

The product of its (nonzero) digits is 5040, while the sum is 29.

Adding to 20271130562 its reverse (26503117202), we get a palindrome (46774247764).

The spelling of 20271130562 in words is "twenty billion, two hundred seventy-one million, one hundred thirty thousand, five hundred sixty-two".