11655125153621 has 2 divisors, whose sum is σ = 11655125153622. Its totient is φ = 11655125153620.

The previous prime is 11655125153563. The next prime is 11655125153629. The reversal of 11655125153621 is 12635152155611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10056319168900 + 1598805984721 = 3171170^2 + 1264439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11655125153621 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11655125153629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5827562576810 + 5827562576811.

It is an arithmetic number, because the mean of its divisors is an integer number (5827562576811).

Almost surely, 2^{11655125153621} is an apocalyptic number.

It is an amenable number.

11655125153621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11655125153621 is an equidigital number, since it uses as much as digits as its factorization.

11655125153621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270000, while the sum is 44.

The spelling of 11655125153621 in words is "eleven trillion, six hundred fifty-five billion, one hundred twenty-five million, one hundred fifty-three thousand, six hundred twenty-one".