74118191616 has 640 divisors, whose sum is σ = 261133762560. Its totient is φ = 20316635136.

The previous prime is 74118191593. The next prime is 74118191621. The reversal of 74118191616 is 61619181147.

74118191616 is a `hidden beast` number, since 7 + 4 + 1 + 18 + 19 + 1 + 616 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 454712751 + ... + 454712913.

It is an arithmetic number, because the mean of its divisors is an integer number (408021504).

Almost surely, 2^74118191616 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 74118191616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130566881280).

74118191616 is an abundant number, since it is smaller than the sum of its proper divisors (187015570944).

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

74118191616 is a wasteful number, since it uses less digits than its factorization.

74118191616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 339 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The spelling of 74118191616 in words is "seventy-four billion, one hundred eighteen million, one hundred ninety-one thousand, six hundred sixteen".