20272928969 has 4 divisors (see below), whose sum is σ = 20473651140. Its totient is φ = 20072206800.

The previous prime is 20272928957. The next prime is 20272928987. The reversal of 20272928969 is 96982927202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11970985744 + 8301943225 = 109412^2 + 91115^2 .

It is a cyclic number.

It is not a de Polignac number, because 20272928969 - 2⁴ = 20272928953 is a prime.

It is a super-2 number, since 2×20272928969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20272928999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100360934 + ... + 100361135.

It is an arithmetic number, because the mean of its divisors is an integer number (5118412785).

Almost surely, 2^20272928969 is an apocalyptic number.

It is an amenable number.

20272928969 is a deficient number, since it is larger than the sum of its proper divisors (200722171).

20272928969 is a wasteful number, since it uses less digits than its factorization.

20272928969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200722170.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 20272928969 in words is "twenty billion, two hundred seventy-two million, nine hundred twenty-eight thousand, nine hundred sixty-nine".