51988549696 has 112 divisors (see below), whose sum is σ = 106388976960. Its totient is φ = 25196288000.

The previous prime is 51988549673. The next prime is 51988549729. The reversal of 51988549696 is 69694588915.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193265850 + ... + 193266118.

It is an arithmetic number, because the mean of its divisors is an integer number (949901580).

Almost surely, 2^51988549696 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 51988549696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53194488480).

51988549696 is an abundant number, since it is smaller than the sum of its proper divisors (54400427264).

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

51988549696 is a wasteful number, since it uses less digits than its factorization.

51988549696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 802 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 70.

The spelling of 51988549696 in words is "fifty-one billion, nine hundred eighty-eight million, five hundred forty-nine thousand, six hundred ninety-six".