51871705050 has 48 divisors (see below), whose sum is σ = 140336544672. Its totient is φ = 12574958400.

The previous prime is 51871705043. The next prime is 51871705069. The reversal of 51871705050 is 5050717815.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15717049 + ... + 15720348.

It is an arithmetic number, because the mean of its divisors is an integer number (2923678014).

Almost surely, 2^51871705050 is an apocalyptic number.

51871705050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51871705050 is an abundant number, since it is smaller than the sum of its proper divisors (88464839622).

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

51871705050 is a wasteful number, since it uses less digits than its factorization.

51871705050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31437423 (or 31437418 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 39.

The spelling of 51871705050 in words is "fifty-one billion, eight hundred seventy-one million, seven hundred five thousand, fifty".