74421228639 has 16 divisors (see below), whose sum is σ = 104298377472. Its totient is φ = 47110607808.

The previous prime is 74421228523. The next prime is 74421228643. The reversal of 74421228639 is 93682212447.

It is not a de Polignac number, because 74421228639 - 2⁹ = 74421228127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74421224639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3926929 + ... + 3945834.

It is an arithmetic number, because the mean of its divisors is an integer number (6518648592).

Almost surely, 2^74421228639 is an apocalyptic number.

74421228639 is a deficient number, since it is larger than the sum of its proper divisors (29877148833).

74421228639 is a wasteful number, since it uses less digits than its factorization.

74421228639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872926.

The product of its digits is 1161216, while the sum is 48.

The spelling of 74421228639 in words is "seventy-four billion, four hundred twenty-one million, two hundred twenty-eight thousand, six hundred thirty-nine".