74746514809 has 4 divisors (see below), whose sum is σ = 75586363380. Its totient is φ = 73906666240.

The previous prime is 74746514797. The next prime is 74746514837. The reversal of 74746514809 is 90841564747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90841564747 = 43 ⋅2112594529.

It can be written as a sum of positive squares in 2 ways, for example, as 33707858409 + 41038656400 = 183597^2 + 202580^2 .

It is a cyclic number.

It is not a de Polignac number, because 74746514809 - 2²³ = 74738126201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74746514809.

It is not an unprimeable number, because it can be changed into a prime (74746514839) 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, 419924152 + ... + 419924329.

It is an arithmetic number, because the mean of its divisors is an integer number (18896590845).

Almost surely, 2^74746514809 is an apocalyptic number.

It is an amenable number.

74746514809 is a deficient number, since it is larger than the sum of its proper divisors (839848571).

74746514809 is an equidigital number, since it uses as much as digits as its factorization.

74746514809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839848570.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 74746514809 in words is "seventy-four billion, seven hundred forty-six million, five hundred fourteen thousand, eight hundred nine".