51247659712 has 28 divisors (see below), whose sum is σ = 107046923320. Its totient is φ = 24275206656.

The previous prime is 51247659707. The next prime is 51247659713. The reversal of 51247659712 is 21795674215.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51247659713) 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, 21071013 + ... + 21073444.

Almost surely, 2^51247659712 is an apocalyptic number.

It is an amenable number.

51247659712 is an abundant number, since it is smaller than the sum of its proper divisors (55799263608).

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

51247659712 is a wasteful number, since it uses less digits than its factorization.

51247659712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42144488 (or 42144478 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 49.

The spelling of 51247659712 in words is "fifty-one billion, two hundred forty-seven million, six hundred fifty-nine thousand, seven hundred twelve".