51611733208 has 32 divisors (see below), whose sum is σ = 110605543200. Its totient is φ = 22117519872.

The previous prime is 51611733203. The next prime is 51611733227. The reversal of 51611733208 is 80233711615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51611733203) 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 7 ways as a sum of consecutive naturals, for example, 842266 + ... + 901462.

It is an arithmetic number, because the mean of its divisors is an integer number (3456423225).

Almost surely, 2^51611733208 is an apocalyptic number.

It is an amenable number.

51611733208 is an abundant number, since it is smaller than the sum of its proper divisors (58993809992).

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

51611733208 is a wasteful number, since it uses less digits than its factorization.

51611733208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74779 (or 74775 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 51611733208 in words is "fifty-one billion, six hundred eleven million, seven hundred thirty-three thousand, two hundred eight".