51895828845 has 160 divisors (see below), whose sum is σ = 111264552960. Its totient is φ = 22641223680.

The previous prime is 51895828841. The next prime is 51895828861. The reversal of 51895828845 is 54882859815.

51895828845 is a `hidden beast` number, since 5 + 1 + 8 + 9 + 582 + 8 + 8 + 45 = 666.

It is not a de Polignac number, because 51895828845 - 2² = 51895828841 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51895828841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6411561 + ... + 6419649.

It is an arithmetic number, because the mean of its divisors is an integer number (695403456).

Almost surely, 2^51895828845 is an apocalyptic number.

It is an amenable number.

51895828845 is an abundant number, since it is smaller than the sum of its proper divisors (59368724115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51895828845 is a wasteful number, since it uses less digits than its factorization.

51895828845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8217 (or 8208 counting only the distinct ones).

The product of its digits is 36864000, while the sum is 63.

The spelling of 51895828845 in words is "fifty-one billion, eight hundred ninety-five million, eight hundred twenty-eight thousand, eight hundred forty-five".