20087964271 has 4 divisors (see below), whose sum is σ = 20093078344. Its totient is φ = 20082850200.

The previous prime is 20087964241. The next prime is 20087964293. The reversal of 20087964271 is 17246978002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17246978002 = 2 ⋅8623489001.

It is a cyclic number.

It is not a de Polignac number, because 20087964271 - 2²⁷ = 19953746543 is a prime.

It is a super-2 number, since 2×20087964271² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20087964241) 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 3 ways as a sum of consecutive naturals, for example, 2551140 + ... + 2559001.

It is an arithmetic number, because the mean of its divisors is an integer number (5023269586).

Almost surely, 2^20087964271 is an apocalyptic number.

20087964271 is a deficient number, since it is larger than the sum of its proper divisors (5114073).

20087964271 is an equidigital number, since it uses as much as digits as its factorization.

20087964271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114072.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 20087964271 in words is "twenty billion, eighty-seven million, nine hundred sixty-four thousand, two hundred seventy-one".