51306523312 has 20 divisors (see below), whose sum is σ = 108443333736. Its totient is φ = 23321146880.

The previous prime is 51306523291. The next prime is 51306523313. The reversal of 51306523312 is 21332560315.

It is not an unprimeable number, because it can be changed into a prime (51306523313) 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 3 ways as a sum of consecutive naturals, for example, 145756993 + ... + 145757344.

Almost surely, 2^51306523312 is an apocalyptic number.

It is an amenable number.

51306523312 is an abundant number, since it is smaller than the sum of its proper divisors (57136810424).

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

51306523312 is a wasteful number, since it uses less digits than its factorization.

51306523312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291514356 (or 291514350 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The spelling of 51306523312 in words is "fifty-one billion, three hundred six million, five hundred twenty-three thousand, three hundred twelve".