74788743169 has 8 divisors (see below), whose sum is σ = 87217193600. Its totient is φ = 64104636708.

The previous prime is 74788743151. The next prime is 74788743181. The reversal of 74788743169 is 96134788747.

It is not a de Polignac number, because 74788743169 - 2⁵ = 74788743137 is a prime.

It is a super-2 number, since 2×74788743169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74788743169.

It is not an unprimeable number, because it can be changed into a prime (74788743149) 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, 109021149 + ... + 109021834.

It is an arithmetic number, because the mean of its divisors is an integer number (10902149200).

Almost surely, 2^74788743169 is an apocalyptic number.

It is an amenable number.

74788743169 is a deficient number, since it is larger than the sum of its proper divisors (12428450431).

74788743169 is an equidigital number, since it uses as much as digits as its factorization.

74788743169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218043004 (or 218042990 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 64.

The spelling of 74788743169 in words is "seventy-four billion, seven hundred eighty-eight million, seven hundred forty-three thousand, one hundred sixty-nine".