824378666873428 has 12 divisors (see below), whose sum is σ = 1442766209985940. Its totient is φ = 412159749734592.

The previous prime is 824378666873423. The next prime is 824378666873429.

824378666873428 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 437078313590724 + 387300353282704 = 20906418^2 + 19679948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (824378666873423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7395862833 + ... + 7395974296.

Almost surely, 2^{824378666873428} is an apocalyptic number.

It is an amenable number.

824378666873428 is a deficient number, since it is larger than the sum of its proper divisors (618387543112512).

824378666873428 is a wasteful number, since it uses less digits than its factorization.

824378666873428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14791851066 (or 14791851064 counting only the distinct ones).

The product of its digits is 24970788864, while the sum is 82.

The spelling of 824378666873428 in words is "eight hundred twenty-four trillion, three hundred seventy-eight billion, six hundred sixty-six million, eight hundred seventy-three thousand, four hundred twenty-eight".