135533123111 has 8 divisors (see below), whose sum is σ = 142670036400. Its totient is φ = 128396568960.

The previous prime is 135533123107. The next prime is 135533123123. The reversal of 135533123111 is 111321335531.

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

It is a cyclic number.

It is not a de Polignac number, because 135533123111 - 2² = 135533123107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135533120111) 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, 1067375 + ... + 1187583.

It is an arithmetic number, because the mean of its divisors is an integer number (17833754550).

Almost surely, 2^135533123111 is an apocalyptic number.

135533123111 is a deficient number, since it is larger than the sum of its proper divisors (7136913289).

135533123111 is a wasteful number, since it uses less digits than its factorization.

135533123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179569.

The product of its digits is 4050, while the sum is 29.

Adding to 135533123111 its reverse (111321335531), we get a palindrome (246854458642).

The spelling of 135533123111 in words is "one hundred thirty-five billion, five hundred thirty-three million, one hundred twenty-three thousand, one hundred eleven".