10783368649 has 3 divisors (see below), whose sum is σ = 10783472493. Its totient is φ = 10783264806.

The previous prime is 10783368647. The next prime is 10783368683. The reversal of 10783368649 is 94686338701.

It is a happy number.

The square root of 10783368649 is 103843.

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 is not a de Polignac number, because 10783368649 - 2¹ = 10783368647 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 10783368649.

It is not an unprimeable number, because it can be changed into a prime (10783368647) 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, 51922 + ... + 155764.

It is an arithmetic number, because the mean of its divisors is an integer number (3594490831).

Almost surely, 2^10783368649 is an apocalyptic number.

10783368649 is the 103843-rd square number.

10783368649 is the 51922-nd centered octagonal number.

It is an amenable number.

10783368649 is a deficient number, since it is larger than the sum of its proper divisors (103844).

10783368649 is an frugal number, since it uses more digits than its factorization.

10783368649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207686 (or 103843 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 10783368649 in words is "ten billion, seven hundred eighty-three million, three hundred sixty-eight thousand, six hundred forty-nine".