74318061021 has 4 divisors (see below), whose sum is σ = 99090748032. Its totient is φ = 49545374012.

The previous prime is 74318061001. The next prime is 74318061031. The reversal of 74318061021 is 12016081347.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74318061021 - 2¹⁰ = 74318059997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74318061001) 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, 12386343501 + ... + 12386343506.

It is an arithmetic number, because the mean of its divisors is an integer number (24772687008).

Almost surely, 2^74318061021 is an apocalyptic number.

It is an amenable number.

74318061021 is a deficient number, since it is larger than the sum of its proper divisors (24772687011).

74318061021 is a wasteful number, since it uses less digits than its factorization.

74318061021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24772687010.

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 74318061021 in words is "seventy-four billion, three hundred eighteen million, sixty-one thousand, twenty-one".