11785089061 has 4 divisors (see below), whose sum is σ = 12478329612. Its totient is φ = 11091848512.

The previous prime is 11785089031. The next prime is 11785089073. The reversal of 11785089061 is 16098058711.

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 10090202500 + 1694886561 = 100450^2 + 41169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11785089061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11785089031) 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, 346620250 + ... + 346620283.

It is an arithmetic number, because the mean of its divisors is an integer number (3119582403).

Almost surely, 2^11785089061 is an apocalyptic number.

It is an amenable number.

11785089061 is a deficient number, since it is larger than the sum of its proper divisors (693240551).

11785089061 is an equidigital number, since it uses as much as digits as its factorization.

11785089061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693240550.

The product of its (nonzero) digits is 120960, while the sum is 46.

The spelling of 11785089061 in words is "eleven billion, seven hundred eighty-five million, eighty-nine thousand, sixty-one".