51122505120 has 96 divisors (see below), whose sum is σ = 161090814528. Its totient is φ = 13628018688.

The previous prime is 51122505113. The next prime is 51122505121. The reversal of 51122505120 is 2150522115.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×51122505120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (51122505121) 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 15 ways as a sum of consecutive naturals, for example, 1527607 + ... + 1560713.

It is an arithmetic number, because the mean of its divisors is an integer number (1678029318).

Almost surely, 2^51122505120 is an apocalyptic number.

It is an amenable number.

51122505120 is an abundant number, since it is smaller than the sum of its proper divisors (109968309408).

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

51122505120 is a wasteful number, since it uses less digits than its factorization.

51122505120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36342 (or 36334 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 51122505120 in words is "fifty-one billion, one hundred twenty-two million, five hundred five thousand, one hundred twenty".