51628657612 has 48 divisors (see below), whose sum is σ = 108230234112. Its totient is φ = 21069576000.

The previous prime is 51628657607. The next prime is 51628657627. The reversal of 51628657612 is 21675682615.

It is an unprimeable number.

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, 36139 + ... + 323362.

It is an arithmetic number, because the mean of its divisors is an integer number (2254796544).

Almost surely, 2^51628657612 is an apocalyptic number.

It is an amenable number.

51628657612 is an abundant number, since it is smaller than the sum of its proper divisors (56601576500).

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

51628657612 is a wasteful number, since it uses less digits than its factorization.

51628657612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359758 (or 359756 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The spelling of 51628657612 in words is "fifty-one billion, six hundred twenty-eight million, six hundred fifty-seven thousand, six hundred twelve".