74144441021 has 8 divisors (see below), whose sum is σ = 84829936320. Its totient is φ = 63482303808.

The previous prime is 74144441017. The next prime is 74144441039. The reversal of 74144441021 is 12014444147.

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

It is not a de Polignac number, because 74144441021 - 2² = 74144441017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74144441071) 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, 5832716 + ... + 5845413.

It is an arithmetic number, because the mean of its divisors is an integer number (10603742040).

Almost surely, 2^74144441021 is an apocalyptic number.

It is an amenable number.

74144441021 is a deficient number, since it is larger than the sum of its proper divisors (10685495299).

74144441021 is a wasteful number, since it uses less digits than its factorization.

74144441021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11679043.

The product of its (nonzero) digits is 14336, while the sum is 32.

Adding to 74144441021 its reverse (12014444147), we get a palindrome (86158885168).

The spelling of 74144441021 in words is "seventy-four billion, one hundred forty-four million, four hundred forty-one thousand, twenty-one".