20027557933 has 2 divisors, whose sum is σ = 20027557934. Its totient is φ = 20027557932.

The previous prime is 20027557909. The next prime is 20027557969. The reversal of 20027557933 is 33975572002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15872724169 + 4154833764 = 125987^2 + 64458^2 .

It is a cyclic number.

It is not a de Polignac number, because 20027557933 - 2²¹ = 20025460781 is a prime.

It is a super-2 number, since 2×20027557933² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20027557933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20027557133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013778966 + 10013778967.

It is an arithmetic number, because the mean of its divisors is an integer number (10013778967).

Almost surely, 2^20027557933 is an apocalyptic number.

It is an amenable number.

20027557933 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027557933 is an equidigital number, since it uses as much as digits as its factorization.

20027557933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 43.

The spelling of 20027557933 in words is "twenty billion, twenty-seven million, five hundred fifty-seven thousand, nine hundred thirty-three".