51541161242 has 16 divisors (see below), whose sum is σ = 80678106432. Its totient is φ = 24648597600.

The previous prime is 51541161229. The next prime is 51541161247. The reversal of 51541161242 is 24216114515.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51541161199 and 51541161208.

It is not an unprimeable number, because it can be changed into a prime (51541161247) 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, 1165133 + ... + 1208559.

It is an arithmetic number, because the mean of its divisors is an integer number (5042381652).

Almost surely, 2^51541161242 is an apocalyptic number.

51541161242 is a deficient number, since it is larger than the sum of its proper divisors (29136945190).

51541161242 is a wasteful number, since it uses less digits than its factorization.

51541161242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69253.

The product of its digits is 9600, while the sum is 32.

Adding to 51541161242 its reverse (24216114515), we get a palindrome (75757275757).

The spelling of 51541161242 in words is "fifty-one billion, five hundred forty-one million, one hundred sixty-one thousand, two hundred forty-two".