51727517730 has 320 divisors, whose sum is σ = 167524651008. Its totient is φ = 11196662400.

The previous prime is 51727517717. The next prime is 51727517731. The reversal of 51727517730 is 3771572715.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (51727517731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 13430305 + ... + 13434155.

Almost surely, 2^51727517730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51727517730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83762325504).

51727517730 is an abundant number, since it is smaller than the sum of its proper divisors (115797133278).

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

51727517730 is a wasteful number, since it uses less digits than its factorization.

51727517730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003 (or 3994 counting only the distinct ones).

The product of its (nonzero) digits is 360150, while the sum is 45.

The spelling of 51727517730 in words is "fifty-one billion, seven hundred twenty-seven million, five hundred seventeen thousand, seven hundred thirty".