11780925820129 has 2 divisors, whose sum is σ = 11780925820130. Its totient is φ = 11780925820128.

The previous prime is 11780925820099. The next prime is 11780925820141. The reversal of 11780925820129 is 92102852908711.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9219239142400 + 2561686677729 = 3036320^2 + 1600527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11780925820129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11780925820129.

It is not a weakly prime, because it can be changed into another prime (11780925820159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5890462910064 + 5890462910065.

It is an arithmetic number, because the mean of its divisors is an integer number (5890462910065).

Almost surely, 2^{11780925820129} is an apocalyptic number.

It is an amenable number.

11780925820129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11780925820129 is an equidigital number, since it uses as much as digits as its factorization.

11780925820129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 55.

The spelling of 11780925820129 in words is "eleven trillion, seven hundred eighty billion, nine hundred twenty-five million, eight hundred twenty thousand, one hundred twenty-nine".