11773524661 has 16 divisors (see below), whose sum is σ = 12553660800. Its totient is φ = 11023588800.

The previous prime is 11773524649. The next prime is 11773524703. The reversal of 11773524661 is 16642537711.

It is a cyclic number.

It is not a de Polignac number, because 11773524661 - 2⁹ = 11773524149 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 (11773528661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78730 + ... + 172468.

It is an arithmetic number, because the mean of its divisors is an integer number (784603800).

Almost surely, 2^11773524661 is an apocalyptic number.

It is an amenable number.

11773524661 is a deficient number, since it is larger than the sum of its proper divisors (780136139).

11773524661 is an equidigital number, since it uses as much as digits as its factorization.

11773524661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93900.

The product of its digits is 211680, while the sum is 43.

The spelling of 11773524661 in words is "eleven billion, seven hundred seventy-three million, five hundred twenty-four thousand, six hundred sixty-one".