51543551512 has 32 divisors (see below), whose sum is σ = 97595035200. Its totient is φ = 25518657024.

The previous prime is 51543551459. The next prime is 51543551531. The reversal of 51543551512 is 21515534515.

It is a super-2 number, since 2×51543551512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911818 + ... + 966694.

It is an arithmetic number, because the mean of its divisors is an integer number (3049844850).

Almost surely, 2^51543551512 is an apocalyptic number.

It is an amenable number.

51543551512 is a deficient number, since it is larger than the sum of its proper divisors (46051483688).

51543551512 is a wasteful number, since it uses less digits than its factorization.

51543551512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56035 (or 56031 counting only the distinct ones).

The product of its digits is 75000, while the sum is 37.

The spelling of 51543551512 in words is "fifty-one billion, five hundred forty-three million, five hundred fifty-one thousand, five hundred twelve".