51731058315776 has 160 divisors (see below), whose sum is σ = 123272743968000. Its totient is φ = 21204827652096.

The previous prime is 51731058315767. The next prime is 51731058315793. The reversal of 51731058315776 is 67751385013715.

It is a super-2 number, since 2×51731058315776² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2040096890 + ... + 2040122246.

It is an arithmetic number, because the mean of its divisors is an integer number (770454649800).

Almost surely, 2^{51731058315776} is an apocalyptic number.

51731058315776 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51731058315776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61636371984000).

51731058315776 is an abundant number, since it is smaller than the sum of its proper divisors (71541685652224).

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

51731058315776 is a wasteful number, since it uses less digits than its factorization.

51731058315776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50154 (or 50138 counting only the distinct ones).

The product of its (nonzero) digits is 18522000, while the sum is 59.

The spelling of 51731058315776 in words is "fifty-one trillion, seven hundred thirty-one billion, fifty-eight million, three hundred fifteen thousand, seven hundred seventy-six".