74668441821 has 8 divisors (see below), whose sum is σ = 99605634624. Its totient is φ = 49755105120.

The previous prime is 74668441817. The next prime is 74668441831. The reversal of 74668441821 is 12814486647.

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

It is not a de Polignac number, because 74668441821 - 2² = 74668441817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74668441801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5956720 + ... + 5969241.

It is an arithmetic number, because the mean of its divisors is an integer number (12450704328).

Almost surely, 2^74668441821 is an apocalyptic number.

It is an amenable number.

74668441821 is a deficient number, since it is larger than the sum of its proper divisors (24937192803).

74668441821 is a wasteful number, since it uses less digits than its factorization.

74668441821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11928051.

The product of its digits is 2064384, while the sum is 51.

The spelling of 74668441821 in words is "seventy-four billion, six hundred sixty-eight million, four hundred forty-one thousand, eight hundred twenty-one".