51785067912 has 32 divisors (see below), whose sum is σ = 129476392800. Its totient is φ = 17259859584.

The previous prime is 51785067907. The next prime is 51785067949. The reversal of 51785067912 is 21976058715.

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, 127188 + ... + 346044.

It is an arithmetic number, because the mean of its divisors is an integer number (4046137275).

Almost surely, 2^51785067912 is an apocalyptic number.

It is an amenable number.

51785067912 is an abundant number, since it is smaller than the sum of its proper divisors (77691324888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51785067912 is a wasteful number, since it uses less digits than its factorization.

51785067912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228725 (or 228721 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 51785067912 in words is "fifty-one billion, seven hundred eighty-five million, sixty-seven thousand, nine hundred twelve".