74228557789 has 8 divisors (see below), whose sum is σ = 78661046520. Its totient is φ = 69920928000.

The previous prime is 74228557723. The next prime is 74228557813. The reversal of 74228557789 is 98775582247.

It can be written as a sum of positive squares in 4 ways, for example, as 17560755289 + 56667802500 = 132517^2 + 238050^2 .

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 74228557789 - 2²³ = 74220169181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74228557789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74228555789) 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, 31213512 + ... + 31215889.

It is an arithmetic number, because the mean of its divisors is an integer number (9832630815).

Almost surely, 2^74228557789 is an apocalyptic number.

It is an amenable number.

74228557789 is a deficient number, since it is larger than the sum of its proper divisors (4432488731).

74228557789 is a wasteful number, since it uses less digits than its factorization.

74228557789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62429471.

The product of its digits is 79027200, while the sum is 64.

The spelling of 74228557789 in words is "seventy-four billion, two hundred twenty-eight million, five hundred fifty-seven thousand, seven hundred eighty-nine".