51000101061101 has 4 divisors (see below), whose sum is σ = 51000237453372. Its totient is φ = 50999964668832.

The previous prime is 51000101061047. The next prime is 51000101061103. The reversal of 51000101061101 is 10116010100015.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25951627587076 + 25048473474025 = 5094274^2 + 5004845^2 .

It is a cyclic number.

It is not a de Polignac number, because 51000101061101 - 2¹⁸ = 51000100798957 is a prime.

It is a super-2 number, since 2×51000101061101² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51000101061101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000101061103) 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, 67633706 + ... + 68383611.

It is an arithmetic number, because the mean of its divisors is an integer number (12750059363343).

Almost surely, 2^{51000101061101} is an apocalyptic number.

It is an amenable number.

51000101061101 is a deficient number, since it is larger than the sum of its proper divisors (136392271).

51000101061101 is a wasteful number, since it uses less digits than its factorization.

51000101061101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136392270.

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 51000101061101 its reverse (10116010100015), we get a palindrome (61116111161116).

The spelling of 51000101061101 in words is "fifty-one trillion, one hundred one million, sixty-one thousand, one hundred one".