74845084747 has 4 divisors (see below), whose sum is σ = 75746832840. Its totient is φ = 73943336656.

The previous prime is 74845084723. The next prime is 74845084757. The reversal of 74845084747 is 74748054847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74748054847 = 127 ⋅588567361.

It is a cyclic number.

It is not a de Polignac number, because 74845084747 - 2³⁵ = 40485346379 is a prime.

It is a super-2 number, since 2×74845084747² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74845084691 and 74845084700.

It is not an unprimeable number, because it can be changed into a prime (74845084757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450873922 + ... + 450874087.

It is an arithmetic number, because the mean of its divisors is an integer number (18936708210).

Almost surely, 2^74845084747 is an apocalyptic number.

74845084747 is a deficient number, since it is larger than the sum of its proper divisors (901748093).

74845084747 is an equidigital number, since it uses as much as digits as its factorization.

74845084747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901748092.

The product of its (nonzero) digits is 28098560, while the sum is 58.

The spelling of 74845084747 in words is "seventy-four billion, eight hundred forty-five million, eighty-four thousand, seven hundred forty-seven".