74040066731 has 16 divisors (see below), whose sum is σ = 80698996224. Its totient is φ = 67656511104.

The previous prime is 74040066707. The next prime is 74040066733. The reversal of 74040066731 is 13766004047.

It is a cyclic number.

It is not a de Polignac number, because 74040066731 - 2¹⁰ = 74040065707 is a prime.

It is a super-2 number, since 2×74040066731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74040066733) 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 15 ways as a sum of consecutive naturals, for example, 181175 + ... + 425328.

It is an arithmetic number, because the mean of its divisors is an integer number (5043687264).

Almost surely, 2^74040066731 is an apocalyptic number.

74040066731 is a deficient number, since it is larger than the sum of its proper divisors (6658929493).

74040066731 is a wasteful number, since it uses less digits than its factorization.

74040066731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606730.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 74040066731 in words is "seventy-four billion, forty million, sixty-six thousand, seven hundred thirty-one".