74312121133 has 8 divisors (see below), whose sum is σ = 74742627960. Its totient is φ = 73882152960.

The previous prime is 74312121071. The next prime is 74312121139. The reversal of 74312121133 is 33112121347.

It can be written as a sum of positive squares in 4 ways, for example, as 4035171529 + 70276949604 = 63523^2 + 265098^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74312121133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74312121139) 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, 143713 + ... + 411433.

It is an arithmetic number, because the mean of its divisors is an integer number (9342828495).

Almost surely, 2^74312121133 is an apocalyptic number.

It is an amenable number.

74312121133 is a deficient number, since it is larger than the sum of its proper divisors (430506827).

74312121133 is a wasteful number, since it uses less digits than its factorization.

74312121133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269327.

The product of its digits is 3024, while the sum is 28.

The spelling of 74312121133 in words is "seventy-four billion, three hundred twelve million, one hundred twenty-one thousand, one hundred thirty-three".