1099815735841 has 3 divisors (see below), whose sum is σ = 1099816784563. Its totient is φ = 1099814687120.

The previous prime is 1099815735817. The next prime is 1099815735857. The reversal of 1099815735841 is 1485375189901.

The square root of 1099815735841 is 1048721.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1023595569441 + 76220166400 = 1011729^2 + 276080^2 .

It is not a de Polignac number, because 1099815735841 - 2⁷ = 1099815735713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1099815735841.

It is not an unprimeable number, because it can be changed into a prime (1099815735881) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 524361 + ... + 1573081.

Almost surely, 2^{1099815735841} is an apocalyptic number.

1099815735841 is the 1048721-st square number.

1099815735841 is the 524361-st centered octagonal number.

It is an amenable number.

1099815735841 is a deficient number, since it is larger than the sum of its proper divisors (1048722).

1099815735841 is an frugal number, since it uses more digits than its factorization.

1099815735841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097442 (or 1048721 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 61.

The spelling of 1099815735841 in words is "one trillion, ninety-nine billion, eight hundred fifteen million, seven hundred thirty-five thousand, eight hundred forty-one".