51611463426121 has 8 divisors (see below), whose sum is σ = 51773557667040. Its totient is φ = 51449623054368.

The previous prime is 51611463426113. The next prime is 51611463426179. The reversal of 51611463426121 is 12162436411615.

51611463426121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51611463426121 - 2³ = 51611463426113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51611463426181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63060051 + ... + 63873256.

It is an arithmetic number, because the mean of its divisors is an integer number (6471694708380).

Almost surely, 2^{51611463426121} is an apocalyptic number.

It is an amenable number.

51611463426121 is a deficient number, since it is larger than the sum of its proper divisors (162094240919).

51611463426121 is a wasteful number, since it uses less digits than its factorization.

51611463426121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126934583.

The product of its digits is 207360, while the sum is 43.

Adding to 51611463426121 its reverse (12162436411615), we get a palindrome (63773899837736).

The spelling of 51611463426121 in words is "fifty-one trillion, six hundred eleven billion, four hundred sixty-three million, four hundred twenty-six thousand, one hundred twenty-one".