11700825898609 has 3 divisors (see below), whose sum is σ = 11700829319257. Its totient is φ = 11700822477962.

The previous prime is 11700825898571. The next prime is 11700825898679. The reversal of 11700825898609 is 90689852800711.

The square root of 11700825898609 is 3420647.

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

11700825898609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-11700825898609 is a prime.

It is a super-2 number, since 2×11700825898609² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11700825898679) 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, 1710324 + ... + 5130970.

Almost surely, 2^{11700825898609} is an apocalyptic number.

11700825898609 is the 3420647-th square number.

11700825898609 is the 1710324-th centered octagonal number.

It is an amenable number.

11700825898609 is a deficient number, since it is larger than the sum of its proper divisors (3420648).

11700825898609 is an frugal number, since it uses more digits than its factorization.

11700825898609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841294 (or 3420647 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 64.

Multiplying 11700825898609 by its sum of digits (64), we get a square (748852857510976 = 27365176²).

The spelling of 11700825898609 in words is "eleven trillion, seven hundred billion, eight hundred twenty-five million, eight hundred ninety-eight thousand, six hundred nine".