1084421799457 has 4 divisors (see below), whose sum is σ = 1104882588180. Its totient is φ = 1063961010736.

The previous prime is 1084421799427. The next prime is 1084421799497. The reversal of 1084421799457 is 7549971244801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 820720036096 + 263701763361 = 905936^2 + 513519^2 .

It is a cyclic number.

It is not a de Polignac number, because 1084421799457 - 2²³ = 1084413410849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1084421799395 and 1084421799404.

It is not an unprimeable number, because it can be changed into a prime (1084421799427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10230394282 + ... + 10230394387.

It is an arithmetic number, because the mean of its divisors is an integer number (276220647045).

Almost surely, 2^{1084421799457} is an apocalyptic number.

It is an amenable number.

1084421799457 is a deficient number, since it is larger than the sum of its proper divisors (20460788723).

1084421799457 is an equidigital number, since it uses as much as digits as its factorization.

1084421799457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20460788722.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 1084421799457 in words is "one trillion, eighty-four billion, four hundred twenty-one million, seven hundred ninety-nine thousand, four hundred fifty-seven".