51510566108 has 12 divisors (see below), whose sum is σ = 91072805712. Its totient is φ = 25489764480.

The previous prime is 51510566087. The next prime is 51510566119. The reversal of 51510566108 is 80166501515.

It is a congruent number.

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, 66379208 + ... + 66379983.

It is an arithmetic number, because the mean of its divisors is an integer number (7589400476).

Almost surely, 2^51510566108 is an apocalyptic number.

It is an amenable number.

51510566108 is a deficient number, since it is larger than the sum of its proper divisors (39562239604).

51510566108 is a wasteful number, since it uses less digits than its factorization.

51510566108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132759292 (or 132759290 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 38.

The spelling of 51510566108 in words is "fifty-one billion, five hundred ten million, five hundred sixty-six thousand, one hundred eight".