747739796166 has 384 divisors, whose sum is σ = 1952391168000. Its totient is φ = 204315955200.

The previous prime is 747739796149. The next prime is 747739796189. The reversal of 747739796166 is 661697937747.

747739796166 is a `hidden beast` number, since 7 + 4 + 77 + 397 + 9 + 6 + 166 = 666.

It is a super-2 number, since 2×747739796166² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 747739796094 and 747739796103.

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 191 ways as a sum of consecutive naturals, for example, 3128618275 + ... + 3128618513.

It is an arithmetic number, because the mean of its divisors is an integer number (5084352000).

Almost surely, 2^747739796166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747739796166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976195584000).

747739796166 is an abundant number, since it is smaller than the sum of its proper divisors (1204651371834).

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

747739796166 is a wasteful number, since it uses less digits than its factorization.

747739796166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 637 counting only the distinct ones).

The product of its digits is 504094752, while the sum is 72.

The spelling of 747739796166 in words is "seven hundred forty-seven billion, seven hundred thirty-nine million, seven hundred ninety-six thousand, one hundred sixty-six".