65505542111133 has 4 divisors (see below), whose sum is σ = 87340722814848. Its totient is φ = 43670361407420.

The previous prime is 65505542111123. The next prime is 65505542111213. The reversal of 65505542111133 is 33111124550556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65505542111133 - 2³² = 65501247143837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65505542111123) 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, 10917590351853 + ... + 10917590351858.

It is an arithmetic number, because the mean of its divisors is an integer number (21835180703712).

Almost surely, 2^{65505542111133} is an apocalyptic number.

It is an amenable number.

65505542111133 is a deficient number, since it is larger than the sum of its proper divisors (21835180703715).

65505542111133 is a wasteful number, since it uses less digits than its factorization.

65505542111133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21835180703714.

The product of its (nonzero) digits is 270000, while the sum is 42.

Adding to 65505542111133 its reverse (33111124550556), we get a palindrome (98616666661689).

The spelling of 65505542111133 in words is "sixty-five trillion, five hundred five billion, five hundred forty-two million, one hundred eleven thousand, one hundred thirty-three".