74783747808 has 576 divisors, whose sum is σ = 278789382144. Its totient is φ = 18437760000.

The previous prime is 74783747807. The next prime is 74783747849. The reversal of 74783747808 is 80874738747.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74783747807) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 77016763 + ... + 77017733.

It is an arithmetic number, because the mean of its divisors is an integer number (484009344).

Almost surely, 2^74783747808 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 74783747808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139394691072).

74783747808 is an abundant number, since it is smaller than the sum of its proper divisors (204005634336).

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

74783747808 is a wasteful number, since it uses less digits than its factorization.

74783747808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 59006976, while the sum is 63.

The spelling of 74783747808 in words is "seventy-four billion, seven hundred eighty-three million, seven hundred forty-seven thousand, eight hundred eight".