20507020271 has 8 divisors (see below), whose sum is σ = 21401318400. Its totient is φ = 19612946232.

The previous prime is 20507020229. The next prime is 20507020277. The reversal of 20507020271 is 17202070502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20507020271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20507020271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20507020277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146630 + ... + 250028.

It is an arithmetic number, because the mean of its divisors is an integer number (2675164800).

Almost surely, 2^20507020271 is an apocalyptic number.

20507020271 is a deficient number, since it is larger than the sum of its proper divisors (894298129).

20507020271 is a wasteful number, since it uses less digits than its factorization.

20507020271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112045.

The product of its (nonzero) digits is 1960, while the sum is 26.

Adding to 20507020271 its reverse (17202070502), we get a palindrome (37709090773).

The spelling of 20507020271 in words is "twenty billion, five hundred seven million, twenty thousand, two hundred seventy-one".