51156575712 has 288 divisors, whose sum is σ = 175347244800. Its totient is φ = 13955420160.

The previous prime is 51156575699. The next prime is 51156575731. The reversal of 51156575712 is 21757565115.

51156575712 is a `hidden beast` number, since 5 + 1 + 1 + 5 + 6 + 575 + 71 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 1218039 + ... + 1259337.

It is an arithmetic number, because the mean of its divisors is an integer number (608844600).

Almost surely, 2^51156575712 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 51156575712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87673622400).

51156575712 is an abundant number, since it is smaller than the sum of its proper divisors (124190669088).

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

51156575712 is a wasteful number, since it uses less digits than its factorization.

51156575712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41366 (or 41355 counting only the distinct ones).

The product of its digits is 367500, while the sum is 45.

The spelling of 51156575712 in words is "fifty-one billion, one hundred fifty-six million, five hundred seventy-five thousand, seven hundred twelve".