20272488433 has 4 divisors (see below), whose sum is σ = 20550193828. Its totient is φ = 19994783040.

The previous prime is 20272488419. The next prime is 20272488449. The reversal of 20272488433 is 33488427202.

It is a happy number.

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 8000944704 + 12271543729 = 89448^2 + 110777^2 .

It is a cyclic number.

It is not a de Polignac number, because 20272488433 - 2¹⁷ = 20272357361 is a prime.

It is a super-2 number, since 2×20272488433² (a number of 21 digits) contains 22 as substring.

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 20272488433.

It is not an unprimeable number, because it can be changed into a prime (20272488473) 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, 138852588 + ... + 138852733.

It is an arithmetic number, because the mean of its divisors is an integer number (5137548457).

Almost surely, 2^20272488433 is an apocalyptic number.

It is an amenable number.

20272488433 is a deficient number, since it is larger than the sum of its proper divisors (277705395).

20272488433 is an equidigital number, since it uses as much as digits as its factorization.

20272488433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277705394.

The product of its (nonzero) digits is 516096, while the sum is 43.

The spelling of 20272488433 in words is "twenty billion, two hundred seventy-two million, four hundred eighty-eight thousand, four hundred thirty-three".