20893433593 has 4 divisors (see below), whose sum is σ = 21085116580. Its totient is φ = 20701750608.

The previous prime is 20893433591. The next prime is 20893433621. The reversal of 20893433593 is 39533439802.

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 13364053609 + 7529379984 = 115603^2 + 86772^2 .

It is a cyclic number.

It is not a de Polignac number, because 20893433593 - 2¹ = 20893433591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20893433591) 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, 95841330 + ... + 95841547.

It is an arithmetic number, because the mean of its divisors is an integer number (5271279145).

Almost surely, 2^20893433593 is an apocalyptic number.

It is an amenable number.

20893433593 is a deficient number, since it is larger than the sum of its proper divisors (191682987).

20893433593 is a wasteful number, since it uses less digits than its factorization.

20893433593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191682986.

The product of its (nonzero) digits is 2099520, while the sum is 49.

The spelling of 20893433593 in words is "twenty billion, eight hundred ninety-three million, four hundred thirty-three thousand, five hundred ninety-three".