74478585261 has 8 divisors (see below), whose sum is σ = 99319733280. Its totient is φ = 49644913712.

The previous prime is 74478585253. The next prime is 74478585361. The reversal of 74478585261 is 16258587447.

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

It is a cyclic number.

It is not a de Polignac number, because 74478585261 - 2³ = 74478585253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74478585361) 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 7 ways as a sum of consecutive naturals, for example, 1845831 + ... + 1885748.

It is an arithmetic number, because the mean of its divisors is an integer number (12414966660).

Almost surely, 2^74478585261 is an apocalyptic number.

It is an amenable number.

74478585261 is a deficient number, since it is larger than the sum of its proper divisors (24841148019).

74478585261 is a wasteful number, since it uses less digits than its factorization.

74478585261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738235.

The product of its digits is 15052800, while the sum is 57.

The spelling of 74478585261 in words is "seventy-four billion, four hundred seventy-eight million, five hundred eighty-five thousand, two hundred sixty-one".