11621752066 has 4 divisors (see below), whose sum is σ = 17432628102. Its totient is φ = 5810876032.

The previous prime is 11621752063. The next prime is 11621752081. The reversal of 11621752066 is 66025712611.

It is a happy number.

11621752066 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 an emirpimes, since its reverse is a distinct semiprime: 66025712611 = 23 ⋅2870683157.

It can be written as a sum of positive squares in only one way, i.e., 9128847025 + 2492905041 = 95545^2 + 49929^2 .

It is not an unprimeable number, because it can be changed into a prime (11621752063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2905438015 + ... + 2905438018.

Almost surely, 2^11621752066 is an apocalyptic number.

11621752066 is a deficient number, since it is larger than the sum of its proper divisors (5810876036).

11621752066 is an equidigital number, since it uses as much as digits as its factorization.

11621752066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810876035.

The product of its (nonzero) digits is 30240, while the sum is 37.

It can be divided in two parts, 1162175 and 2066, that added together give a square (1164241 = 1079²).

The spelling of 11621752066 in words is "eleven billion, six hundred twenty-one million, seven hundred fifty-two thousand, sixty-six".