74118720663730 has 64 divisors (see below), whose sum is σ = 134954612321760. Its totient is φ = 29306367129600.

The previous prime is 74118720663661. The next prime is 74118720663731. The reversal of 74118720663730 is 3736602781147.

It is a Cunningham number, because it is equal to 8609223²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 5326111618569 + 68792609045161 = 2307837^2 + 8294131^2 .

It is not an unprimeable number, because it can be changed into a prime (74118720663731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3759117832 + ... + 3759137548.

Almost surely, 2^{74118720663730} is an apocalyptic number.

74118720663730 is a deficient number, since it is larger than the sum of its proper divisors (60835891658030).

74118720663730 is a wasteful number, since it uses less digits than its factorization.

74118720663730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27775.

The product of its (nonzero) digits is 7112448, while the sum is 55.

The spelling of 74118720663730 in words is "seventy-four trillion, one hundred eighteen billion, seven hundred twenty million, six hundred sixty-three thousand, seven hundred thirty".