51016543123 has 16 divisors (see below), whose sum is σ = 66094309120. Its totient is φ = 38240276256.

The previous prime is 51016543103. The next prime is 51016543183. The reversal of 51016543123 is 32134561015.

It is a de Polignac number, because none of the positive numbers 2^k-51016543123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51016543103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14751465 + ... + 14754922.

It is an arithmetic number, because the mean of its divisors is an integer number (4130894320).

Almost surely, 2^51016543123 is an apocalyptic number.

51016543123 is a deficient number, since it is larger than the sum of its proper divisors (15077765997).

51016543123 is a wasteful number, since it uses less digits than its factorization.

51016543123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29506426.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 51016543123 in words is "fifty-one billion, sixteen million, five hundred forty-three thousand, one hundred twenty-three".