20127871267 has 6 divisors (see below), whose sum is σ = 23414054388. Its totient is φ = 17252461044.

The previous prime is 20127871261. The next prime is 20127871271. The reversal of 20127871267 is 76217872102.

It is not a de Polignac number, because 20127871267 - 2³¹ = 17980387619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20127871261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205386393 + ... + 205386490.

It is an arithmetic number, because the mean of its divisors is an integer number (3902342398).

Almost surely, 2^20127871267 is an apocalyptic number.

20127871267 is a deficient number, since it is larger than the sum of its proper divisors (3286183121).

20127871267 is an equidigital number, since it uses as much as digits as its factorization.

20127871267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410772897 (or 410772890 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 43.

The spelling of 20127871267 in words is "twenty billion, one hundred twenty-seven million, eight hundred seventy-one thousand, two hundred sixty-seven".