74381134081 has 4 divisors (see below), whose sum is σ = 74404848132. Its totient is φ = 74357420032.

The previous prime is 74381134049. The next prime is 74381134109. The reversal of 74381134081 is 18043118347.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60602130625 + 13779003456 = 246175^2 + 117384^2 .

It is a cyclic number.

It is not a de Polignac number, because 74381134081 - 2⁵ = 74381134049 is a prime.

It is a super-2 number, since 2×74381134081² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74381134021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11852320 + ... + 11858593.

It is an arithmetic number, because the mean of its divisors is an integer number (18601212033).

Almost surely, 2^74381134081 is an apocalyptic number.

It is an amenable number.

74381134081 is a deficient number, since it is larger than the sum of its proper divisors (23714051).

74381134081 is a wasteful number, since it uses less digits than its factorization.

74381134081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23714050.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 74381134081 in words is "seventy-four billion, three hundred eighty-one million, one hundred thirty-four thousand, eighty-one".