11772640129 has 2 divisors, whose sum is σ = 11772640130. Its totient is φ = 11772640128.

The previous prime is 11772640111. The next prime is 11772640153. The reversal of 11772640129 is 92104627711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11240876529 + 531763600 = 106023^2 + 23060^2 .

It is an emirp because it is prime and its reverse (92104627711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11772640129 - 2¹¹ = 11772638081 is a prime.

It is a super-2 number, since 2×11772640129² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11772640091 and 11772640100.

It is not a weakly prime, because it can be changed into another prime (11772640109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5886320064 + 5886320065.

It is an arithmetic number, because the mean of its divisors is an integer number (5886320065).

Almost surely, 2^11772640129 is an apocalyptic number.

It is an amenable number.

11772640129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11772640129 is an equidigital number, since it uses as much as digits as its factorization.

11772640129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 11772640129 in words is "eleven billion, seven hundred seventy-two million, six hundred forty thousand, one hundred twenty-nine".