51005706120 has 48 divisors (see below), whose sum is σ = 165768546060. Its totient is φ = 13601521536.

The previous prime is 51005706109. The next prime is 51005706127. The reversal of 51005706120 is 2160750015.

51005706120 is a `hidden beast` number, since 5 + 10 + 0 + 570 + 61 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49228071876 + 1777634244 = 221874^2 + 42162^2 .

It is not an unprimeable number, because it can be changed into a prime (51005706127) 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 11 ways as a sum of consecutive naturals, for example, 70840899 + ... + 70841618.

Almost surely, 2^51005706120 is an apocalyptic number.

It is an amenable number.

51005706120 is an abundant number, since it is smaller than the sum of its proper divisors (114762839940).

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

51005706120 is a wasteful number, since it uses less digits than its factorization.

51005706120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141682534 (or 141682527 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The spelling of 51005706120 in words is "fifty-one billion, five million, seven hundred six thousand, one hundred twenty".