51667711488 has 160 divisors (see below), whose sum is σ = 153395003520. Its totient is φ = 17171343360.

The previous prime is 51667711483. The next prime is 51667711523. The reversal of 51667711488 is 88411776615.

51667711488 is a `hidden beast` number, since 516 + 6 + 7 + 7 + 114 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51667711481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4791543 + ... + 4802313.

It is an arithmetic number, because the mean of its divisors is an integer number (958718772).

Almost surely, 2^51667711488 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 51667711488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76697501760).

51667711488 is an abundant number, since it is smaller than the sum of its proper divisors (101727292032).

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

51667711488 is a wasteful number, since it uses less digits than its factorization.

51667711488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11145 (or 11123 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The spelling of 51667711488 in words is "fifty-one billion, six hundred sixty-seven million, seven hundred eleven thousand, four hundred eighty-eight".