74315779221 has 8 divisors (see below), whose sum is σ = 101504479104. Its totient is φ = 48335466080.

The previous prime is 74315779211. The next prime is 74315779247. The reversal of 74315779221 is 12297751347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74315779221 - 2¹³ = 74315771029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74315779211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302096541 + ... + 302096786.

It is an arithmetic number, because the mean of its divisors is an integer number (12688059888).

Almost surely, 2^74315779221 is an apocalyptic number.

It is an amenable number.

74315779221 is a deficient number, since it is larger than the sum of its proper divisors (27188699883).

74315779221 is a wasteful number, since it uses less digits than its factorization.

74315779221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604193371.

The product of its digits is 740880, while the sum is 48.

The spelling of 74315779221 in words is "seventy-four billion, three hundred fifteen million, seven hundred seventy-nine thousand, two hundred twenty-one".