20135023594 has 16 divisors (see below), whose sum is σ = 35083040256. Its totient is φ = 8487831600.

The previous prime is 20135023591. The next prime is 20135023619. The reversal of 20135023594 is 49532053102.

It is not an unprimeable number, because it can be changed into a prime (20135023591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11787802 + ... + 11789509.

It is an arithmetic number, because the mean of its divisors is an integer number (2192690016).

Almost surely, 2^20135023594 is an apocalyptic number.

20135023594 is a deficient number, since it is larger than the sum of its proper divisors (14948016662).

20135023594 is a wasteful number, since it uses less digits than its factorization.

20135023594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23577381.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 20135023594 its reverse (49532053102), we get a palindrome (69667076696).

The spelling of 20135023594 in words is "twenty billion, one hundred thirty-five million, twenty-three thousand, five hundred ninety-four".