51343158128 has 40 divisors (see below), whose sum is σ = 99734568960. Its totient is φ = 25605293760.

The previous prime is 51343158079. The next prime is 51343158157. The reversal of 51343158128 is 82185134315.

It is a happy number.

It is a super-2 number, since 2×51343158128² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15139313 + ... + 15142703.

It is an arithmetic number, because the mean of its divisors is an integer number (2493364224).

Almost surely, 2^51343158128 is an apocalyptic number.

It is an amenable number.

51343158128 is a deficient number, since it is larger than the sum of its proper divisors (48391410832).

51343158128 is a wasteful number, since it uses less digits than its factorization.

51343158128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565 (or 5559 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The spelling of 51343158128 in words is "fifty-one billion, three hundred forty-three million, one hundred fifty-eight thousand, one hundred twenty-eight".