51082000645 has 32 divisors (see below), whose sum is σ = 66743953920. Its totient is φ = 37307001600.

The previous prime is 51082000643. The next prime is 51082000657. The reversal of 51082000645 is 54600028015.

It is not a de Polignac number, because 51082000645 - 2¹ = 51082000643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51082000643) 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 31 ways as a sum of consecutive naturals, for example, 2236272 + ... + 2258998.

It is an arithmetic number, because the mean of its divisors is an integer number (2085748560).

Almost surely, 2^51082000645 is an apocalyptic number.

It is an amenable number.

51082000645 is a deficient number, since it is larger than the sum of its proper divisors (15661953275).

51082000645 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (51082000644) it forms an eRAP, since the sums of their prime factors are consecutive (23124 and 23125).

51082000645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23125.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 51082000645 in words is "fifty-one billion, eighty-two million, six hundred forty-five", and thus it is an aban number.