20765872127 has 48 divisors (see below), whose sum is σ = 28308653568. Its totient is φ = 14790522240.

The previous prime is 20765872087. The next prime is 20765872199. The reversal of 20765872127 is 72127856702.

It is not a de Polignac number, because 20765872127 - 2²² = 20761677823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20765872627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1332593 + ... + 1348085.

It is an arithmetic number, because the mean of its divisors is an integer number (589763616).

Almost surely, 2^20765872127 is an apocalyptic number.

20765872127 is a deficient number, since it is larger than the sum of its proper divisors (7542781441).

20765872127 is a wasteful number, since it uses less digits than its factorization.

20765872127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15640 (or 15627 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 47.

The spelling of 20765872127 in words is "twenty billion, seven hundred sixty-five million, eight hundred seventy-two thousand, one hundred twenty-seven".