51535253516 has 12 divisors (see below), whose sum is σ = 94933361880. Its totient is φ = 24411435840.

The previous prime is 51535253489. The next prime is 51535253533. The reversal of 51535253516 is 61535253515.

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, 339047645 + ... + 339047796.

It is an arithmetic number, because the mean of its divisors is an integer number (7911113490).

Almost surely, 2^51535253516 is an apocalyptic number.

It is an amenable number.

51535253516 is a deficient number, since it is larger than the sum of its proper divisors (43398108364).

51535253516 is a wasteful number, since it uses less digits than its factorization.

51535253516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678095464 (or 678095462 counting only the distinct ones).

The product of its digits is 337500, while the sum is 41.

Subtracting 51535253516 from its reverse (61535253515), we obtain a palindrome (9999999999).

The spelling of 51535253516 in words is "fifty-one billion, five hundred thirty-five million, two hundred fifty-three thousand, five hundred sixteen".