20135441534 has 8 divisors (see below), whose sum is σ = 32526482520. Its totient is φ = 9293280696.

The previous prime is 20135441533. The next prime is 20135441561. The reversal of 20135441534 is 43514453102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20135441534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135441533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387220004 + ... + 387220055.

It is an arithmetic number, because the mean of its divisors is an integer number (4065810315).

Almost surely, 2^20135441534 is an apocalyptic number.

20135441534 is a deficient number, since it is larger than the sum of its proper divisors (12391040986).

20135441534 is a wasteful number, since it uses less digits than its factorization.

20135441534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774440074.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20135441534 its reverse (43514453102), we get a palindrome (63649894636).

The spelling of 20135441534 in words is "twenty billion, one hundred thirty-five million, four hundred forty-one thousand, five hundred thirty-four".