74285783971 has 4 divisors (see below), whose sum is σ = 84898038832. Its totient is φ = 63673529112.

The previous prime is 74285783963. The next prime is 74285783993. The reversal of 74285783971 is 17938758247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17938758247 = 653 ⋅27471299.

It is a cyclic number.

It is not a de Polignac number, because 74285783971 - 2³ = 74285783963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74285783171) 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, 5306127420 + ... + 5306127433.

It is an arithmetic number, because the mean of its divisors is an integer number (21224509708).

Almost surely, 2^74285783971 is an apocalyptic number.

74285783971 is a deficient number, since it is larger than the sum of its proper divisors (10612254861).

74285783971 is a wasteful number, since it uses less digits than its factorization.

74285783971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10612254860.

The product of its digits is 23708160, while the sum is 61.

The spelling of 74285783971 in words is "seventy-four billion, two hundred eighty-five million, seven hundred eighty-three thousand, nine hundred seventy-one".