74121033347 has 4 divisors (see below), whose sum is σ = 74199802656. Its totient is φ = 74042264040.

The previous prime is 74121033319. The next prime is 74121033353. The reversal of 74121033347 is 74333012147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74333012147 = 137 ⋅542576731.

It is a cyclic number.

It is not a de Polignac number, because 74121033347 - 2¹² = 74121029251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74121033047) 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 3 ways as a sum of consecutive naturals, for example, 39383243 + ... + 39385124.

It is an arithmetic number, because the mean of its divisors is an integer number (18549950664).

Almost surely, 2^74121033347 is an apocalyptic number.

74121033347 is a deficient number, since it is larger than the sum of its proper divisors (78769309).

74121033347 is an equidigital number, since it uses as much as digits as its factorization.

74121033347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78769308.

The product of its (nonzero) digits is 42336, while the sum is 35.

The spelling of 74121033347 in words is "seventy-four billion, one hundred twenty-one million, thirty-three thousand, three hundred forty-seven".