513868868312 has 32 divisors (see below), whose sum is σ = 990757262880. Its totient is φ = 249714589440.

The previous prime is 513868868311. The next prime is 513868868351. The reversal of 513868868312 is 213868868315.

It is a super-2 number, since 2×513868868312² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513868868311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2892203 + ... + 3064730.

It is an arithmetic number, because the mean of its divisors is an integer number (30961164465).

Almost surely, 2^513868868312 is an apocalyptic number.

It is an amenable number.

513868868312 is a deficient number, since it is larger than the sum of its proper divisors (476888394568).

513868868312 is a wasteful number, since it uses less digits than its factorization.

513868868312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5957243 (or 5957239 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 59.

The spelling of 513868868312 in words is "five hundred thirteen billion, eight hundred sixty-eight million, eight hundred sixty-eight thousand, three hundred twelve".