511061101051 has 4 divisors (see below), whose sum is σ = 511504346872. Its totient is φ = 510617855232.

The previous prime is 511061101037. The next prime is 511061101069. The reversal of 511061101051 is 150101160115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 511061101051 - 2¹⁵ = 511061068283 is a prime.

It is a super-2 number, since 2×511061101051² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511061102051) 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, 221621181 + ... + 221623486.

It is an arithmetic number, because the mean of its divisors is an integer number (127876086718).

Almost surely, 2^511061101051 is an apocalyptic number.

511061101051 is a deficient number, since it is larger than the sum of its proper divisors (443245821).

511061101051 is a wasteful number, since it uses less digits than its factorization.

511061101051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443245820.

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 511061101051 its reverse (150101160115), we get a palindrome (661162261166).

The spelling of 511061101051 in words is "five hundred eleven billion, sixty-one million, one hundred one thousand, fifty-one".