74421477785 has 8 divisors (see below), whose sum is σ = 89948261760. Its totient is φ = 59108856624.

The previous prime is 74421477773. The next prime is 74421477791. The reversal of 74421477785 is 58777412447.

It is a happy number.

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 74421477785 - 2³⁴ = 57241608601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74421477785.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 53539937 + ... + 53541326.

It is an arithmetic number, because the mean of its divisors is an integer number (11243532720).

Almost surely, 2^74421477785 is an apocalyptic number.

It is an amenable number.

74421477785 is a deficient number, since it is larger than the sum of its proper divisors (15526783975).

74421477785 is a wasteful number, since it uses less digits than its factorization.

74421477785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107081407.

The product of its digits is 12293120, while the sum is 56.

The spelling of 74421477785 in words is "seventy-four billion, four hundred twenty-one million, four hundred seventy-seven thousand, seven hundred eighty-five".