74728206773 has 16 divisors (see below), whose sum is σ = 86750870400. Its totient is φ = 63617241600.

The previous prime is 74728206769. The next prime is 74728206781. The reversal of 74728206773 is 37760282747.

It is a happy number.

It is not a de Polignac number, because 74728206773 - 2² = 74728206769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74728206713) 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 15 ways as a sum of consecutive naturals, for example, 966848 + ... + 1041273.

It is an arithmetic number, because the mean of its divisors is an integer number (5421929400).

Almost surely, 2^74728206773 is an apocalyptic number.

It is an amenable number.

74728206773 is a deficient number, since it is larger than the sum of its proper divisors (12022663627).

74728206773 is a wasteful number, since it uses less digits than its factorization.

74728206773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008348.

The product of its (nonzero) digits is 5531904, while the sum is 53.

The spelling of 74728206773 in words is "seventy-four billion, seven hundred twenty-eight million, two hundred six thousand, seven hundred seventy-three".