20471027929 has 9 divisors (see below), whose sum is σ = 22502942581. Its totient is φ = 18608594620.

The previous prime is 20471027911. The next prime is 20471027947. The reversal of 20471027929 is 92972017402.

The square root of 20471027929 is 143077.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (20471027911) and next prime (20471027947).

It is not a de Polignac number, because 20471027929 - 2¹⁵ = 20470995161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20475027929) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1567344 + ... + 1580350.

Almost surely, 2^20471027929 is an apocalyptic number.

20471027929 is the 143077-th square number.

20471027929 is the 71539-th centered octagonal number.

It is an amenable number.

20471027929 is a deficient number, since it is larger than the sum of its proper divisors (2031914652).

20471027929 is an frugal number, since it uses more digits than its factorization.

20471027929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26036 (or 13018 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 20471027929 in words is "twenty billion, four hundred seventy-one million, twenty-seven thousand, nine hundred twenty-nine".