51128279113 has 8 divisors (see below), whose sum is σ = 51179616000. Its totient is φ = 51076971408.

The previous prime is 51128279107. The next prime is 51128279179. The reversal of 51128279113 is 31197282115.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51128279113 is a prime.

It is a super-2 number, since 2×51128279113² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51128279513) 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, 5134063 + ... + 5144011.

It is an arithmetic number, because the mean of its divisors is an integer number (6397452000).

Almost surely, 2^51128279113 is an apocalyptic number.

It is an amenable number.

51128279113 is a deficient number, since it is larger than the sum of its proper divisors (51336887).

51128279113 is a wasteful number, since it uses less digits than its factorization.

51128279113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14591.

The product of its digits is 30240, while the sum is 40.

The spelling of 51128279113 in words is "fifty-one billion, one hundred twenty-eight million, two hundred seventy-nine thousand, one hundred thirteen".