51662251116 has 192 divisors, whose sum is σ = 162289612800. Its totient is φ = 13874208768.

The previous prime is 51662251097. The next prime is 51662251153. The reversal of 51662251116 is 61115226615.

51662251116 is a `hidden beast` number, since 5 + 1 + 6 + 622 + 5 + 11 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11937345 + ... + 11941671.

It is an arithmetic number, because the mean of its divisors is an integer number (845258400).

Almost surely, 2^51662251116 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 51662251116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81144806400).

51662251116 is an abundant number, since it is smaller than the sum of its proper divisors (110627361684).

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

51662251116 is a wasteful number, since it uses less digits than its factorization.

51662251116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5293 (or 5285 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The spelling of 51662251116 in words is "fifty-one billion, six hundred sixty-two million, two hundred fifty-one thousand, one hundred sixteen".