51518348123 has 32 divisors (see below), whose sum is σ = 58024885248. Its totient is φ = 45346672800.

The previous prime is 51518348113. The next prime is 51518348159. The reversal of 51518348123 is 32184381515.

It is a happy number.

It is not a de Polignac number, because 51518348123 - 2¹² = 51518344027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51518348113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10328036 + ... + 10333022.

It is an arithmetic number, because the mean of its divisors is an integer number (1813277664).

Almost surely, 2^51518348123 is an apocalyptic number.

51518348123 is a deficient number, since it is larger than the sum of its proper divisors (6506537125).

51518348123 is a wasteful number, since it uses less digits than its factorization.

51518348123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303.

The product of its digits is 115200, while the sum is 41.

The spelling of 51518348123 in words is "fifty-one billion, five hundred eighteen million, three hundred forty-eight thousand, one hundred twenty-three".