51543652912 has 20 divisors (see below), whose sum is σ = 99879232320. Its totient is φ = 25768367168.

The previous prime is 51543652907. The next prime is 51543652921. The reversal of 51543652912 is 21925634515.

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, 91087 + ... + 333742.

It is an arithmetic number, because the mean of its divisors is an integer number (4993961616).

Almost surely, 2^51543652912 is an apocalyptic number.

It is an amenable number.

51543652912 is a deficient number, since it is larger than the sum of its proper divisors (48335579408).

51543652912 is a wasteful number, since it uses less digits than its factorization.

51543652912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432420 (or 432414 counting only the distinct ones).

The product of its digits is 324000, while the sum is 43.

The spelling of 51543652912 in words is "fifty-one billion, five hundred forty-three million, six hundred fifty-two thousand, nine hundred twelve".