51351556012 has 12 divisors (see below), whose sum is σ = 90521174520. Its totient is φ = 25488363296.

The previous prime is 51351556001. The next prime is 51351556049. The reversal of 51351556012 is 21065515315.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46853062 + ... + 46854157.

It is an arithmetic number, because the mean of its divisors is an integer number (7543431210).

Almost surely, 2^51351556012 is an apocalyptic number.

It is an amenable number.

51351556012 is a deficient number, since it is larger than the sum of its proper divisors (39169618508).

51351556012 is a wasteful number, since it uses less digits than its factorization.

51351556012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93707360 (or 93707358 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 51351556012 in words is "fifty-one billion, three hundred fifty-one million, five hundred fifty-six thousand, twelve".