51630111461233 has 4 divisors (see below), whose sum is σ = 53410460132340. Its totient is φ = 49849762790128.

The previous prime is 51630111461167. The next prime is 51630111461321. The reversal of 51630111461233 is 33216411103615.

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 32470030269504 + 19160081191729 = 5698248^2 + 4377223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51630111461233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51630111461192 and 51630111461201.

It is not an unprimeable number, because it can be changed into a prime (51630111461833) 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, 890174335510 + ... + 890174335567.

It is an arithmetic number, because the mean of its divisors is an integer number (13352615033085).

Almost surely, 2^{51630111461233} is an apocalyptic number.

It is an amenable number.

51630111461233 is a deficient number, since it is larger than the sum of its proper divisors (1780348671107).

51630111461233 is a wasteful number, since it uses less digits than its factorization.

51630111461233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780348671106.

The product of its (nonzero) digits is 38880, while the sum is 37.

Adding to 51630111461233 its reverse (33216411103615), we get a palindrome (84846522564848).

The spelling of 51630111461233 in words is "fifty-one trillion, six hundred thirty billion, one hundred eleven million, four hundred sixty-one thousand, two hundred thirty-three".