51646011121 has 8 divisors (see below), whose sum is σ = 51917595840. Its totient is φ = 51374521968.

The previous prime is 51646011119. The next prime is 51646011233. The reversal of 51646011121 is 12111064615.

51646011121 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 51646011121 - 2¹ = 51646011119 is a prime.

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 51646011121.

It is not an unprimeable number, because it can be changed into a prime (51646015121) 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, 1232110 + ... + 1273336.

It is an arithmetic number, because the mean of its divisors is an integer number (6489699480).

Almost surely, 2^51646011121 is an apocalyptic number.

It is an amenable number.

51646011121 is a deficient number, since it is larger than the sum of its proper divisors (271584719).

51646011121 is a wasteful number, since it uses less digits than its factorization.

51646011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47783.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 51646011121 its reverse (12111064615), we get a palindrome (63757075736).

The spelling of 51646011121 in words is "fifty-one billion, six hundred forty-six million, eleven thousand, one hundred twenty-one".