51739678080 has 192 divisors, whose sum is σ = 180072921600. Its totient is φ = 13688414208.

The previous prime is 51739678057. The next prime is 51739678091. The reversal of 51739678080 is 8087693715.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent 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, 696156 + ... + 766884.

It is an arithmetic number, because the mean of its divisors is an integer number (937879800).

Almost surely, 2^51739678080 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 51739678080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90036460800).

51739678080 is an abundant number, since it is smaller than the sum of its proper divisors (128333243520).

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

51739678080 is a wasteful number, since it uses less digits than its factorization.

51739678080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70881 (or 70866 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 51739678080 in words is "fifty-one billion, seven hundred thirty-nine million, six hundred seventy-eight thousand, eighty".