51327537976 has 128 divisors (see below), whose sum is σ = 114952400640. Its totient is φ = 21178828800.

The previous prime is 51327537971. The next prime is 51327537991. The reversal of 51327537976 is 67973572315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51327537971) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 22882311 + ... + 22884553.

It is an arithmetic number, because the mean of its divisors is an integer number (898065630).

Almost surely, 2^51327537976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51327537976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57476200320).

51327537976 is an abundant number, since it is smaller than the sum of its proper divisors (63624862664).

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

51327537976 is a wasteful number, since it uses less digits than its factorization.

51327537976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597 (or 2593 counting only the distinct ones).

The product of its digits is 8334900, while the sum is 55.

The spelling of 51327537976 in words is "fifty-one billion, three hundred twenty-seven million, five hundred thirty-seven thousand, nine hundred seventy-six".