51230242126161 has 64 divisors (see below), whose sum is σ = 89082547660800. Its totient is φ = 28493313624000.

The previous prime is 51230242126097. The next prime is 51230242126163. The reversal of 51230242126161 is 16162124203215.

51230242126161 is a `hidden beast` number, since 5 + 1 + 2 + 3 + 0 + 24 + 2 + 12 + 616 + 1 = 666.

It is not a de Polignac number, because 51230242126161 - 2⁶ = 51230242126097 is a prime.

It is a super-2 number, since 2×51230242126161² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51230242126163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21617455 + ... + 23869956.

It is an arithmetic number, because the mean of its divisors is an integer number (1391914807200).

Almost surely, 2^{51230242126161} is an apocalyptic number.

It is an amenable number.

51230242126161 is a deficient number, since it is larger than the sum of its proper divisors (37852305534639).

51230242126161 is a wasteful number, since it uses less digits than its factorization.

51230242126161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45487587 (or 45487581 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 51230242126161 its reverse (16162124203215), we get a palindrome (67392366329376).

The spelling of 51230242126161 in words is "fifty-one trillion, two hundred thirty billion, two hundred forty-two million, one hundred twenty-six thousand, one hundred sixty-one".