51317599852 has 24 divisors (see below), whose sum is σ = 96134673600. Its totient is φ = 23896328976.

The previous prime is 51317599847. The next prime is 51317599873. The reversal of 51317599852 is 25899571315.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51317599793 and 51317599802.

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, 5717818 + ... + 5726785.

It is an arithmetic number, because the mean of its divisors is an integer number (4005611400).

Almost surely, 2^51317599852 is an apocalyptic number.

It is an amenable number.

51317599852 is a deficient number, since it is larger than the sum of its proper divisors (44817073748).

51317599852 is a wasteful number, since it uses less digits than its factorization.

51317599852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11444685 (or 11444683 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 55.

The spelling of 51317599852 in words is "fifty-one billion, three hundred seventeen million, five hundred ninety-nine thousand, eight hundred fifty-two".