51853218752 has 28 divisors (see below), whose sum is σ = 102937366896. Its totient is φ = 25916244480.

The previous prime is 51853218751. The next prime is 51853218761. The reversal of 51853218752 is 25781235815.

It is a junction number, because it is equal to n+sod(n) for n = 51853218697 and 51853218706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51853218751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653 + ... + 322035.

It is an arithmetic number, because the mean of its divisors is an integer number (3676334532).

Almost surely, 2^51853218752 is an apocalyptic number.

It is an amenable number.

51853218752 is a deficient number, since it is larger than the sum of its proper divisors (51084148144).

51853218752 is a wasteful number, since it uses less digits than its factorization.

51853218752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323916 (or 323906 counting only the distinct ones).

The product of its digits is 672000, while the sum is 47.

The spelling of 51853218752 in words is "fifty-one billion, eight hundred fifty-three million, two hundred eighteen thousand, seven hundred fifty-two".