51148173122 has 54 divisors (see below), whose sum is σ = 85407206283. Its totient is φ = 22966927104.

The previous prime is 51148173121. The next prime is 51148173127. The reversal of 51148173122 is 22137184115.

It can be written as a sum of positive squares in 5 ways, for example, as 51147893281 + 279841 = 226159^2 + 529^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=159919.

It is a super-2 number, since 2×51148173122² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51148173121) 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 26 ways as a sum of consecutive naturals, for example, 125056454 + ... + 125056862.

Almost surely, 2^51148173122 is an apocalyptic number.

51148173122 is a deficient number, since it is larger than the sum of its proper divisors (34259033161).

51148173122 is an equidigital number, since it uses as much as digits as its factorization.

51148173122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 451 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The spelling of 51148173122 in words is "fifty-one billion, one hundred forty-eight million, one hundred seventy-three thousand, one hundred twenty-two".