74481817073 has 4 divisors (see below), whose sum is σ = 74483347188. Its totient is φ = 74480286960.

The previous prime is 74481817063. The next prime is 74481817087. The reversal of 74481817073 is 37071818447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27361129744 + 47120687329 = 165412^2 + 217073^2 .

It is a cyclic number.

It is not a de Polignac number, because 74481817073 - 2⁶ = 74481817009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74481817013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689558 + ... + 790223.

It is an arithmetic number, because the mean of its divisors is an integer number (18620836797).

Almost surely, 2^74481817073 is an apocalyptic number.

It is an amenable number.

74481817073 is a deficient number, since it is larger than the sum of its proper divisors (1530115).

74481817073 is a wasteful number, since it uses less digits than its factorization.

74481817073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530114.

The product of its (nonzero) digits is 1053696, while the sum is 50.

The spelling of 74481817073 in words is "seventy-four billion, four hundred eighty-one million, eight hundred seventeen thousand, seventy-three".