51170128964 has 12 divisors (see below), whose sum is σ = 89888213184. Its totient is φ = 25487782344.

The previous prime is 51170128963. The next prime is 51170128981. The reversal of 51170128964 is 46982107115.

It is not an unprimeable number, because it can be changed into a prime (51170128963) 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 3 ways as a sum of consecutive naturals, for example, 24319352 + ... + 24321455.

It is an arithmetic number, because the mean of its divisors is an integer number (7490684432).

Almost surely, 2^51170128964 is an apocalyptic number.

It is an amenable number.

51170128964 is a deficient number, since it is larger than the sum of its proper divisors (38718084220).

51170128964 is a wasteful number, since it uses less digits than its factorization.

51170128964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48641074 (or 48641072 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 51170128964 in words is "fifty-one billion, one hundred seventy million, one hundred twenty-eight thousand, nine hundred sixty-four".