2145122153641 has 2 divisors, whose sum is σ = 2145122153642. Its totient is φ = 2145122153640.

The previous prime is 2145122153597. The next prime is 2145122153693. The reversal of 2145122153641 is 1463512215412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1896599963241 + 248522190400 = 1377171^2 + 498520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145122153641 - 2⁹ = 2145122153129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2145122153641.

It is not a weakly prime, because it can be changed into another prime (2145122453641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072561076820 + 1072561076821.

It is an arithmetic number, because the mean of its divisors is an integer number (1072561076821).

Almost surely, 2^{2145122153641} is an apocalyptic number.

It is an amenable number.

2145122153641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145122153641 is an equidigital number, since it uses as much as digits as its factorization.

2145122153641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 37.

The spelling of 2145122153641 in words is "two trillion, one hundred forty-five billion, one hundred twenty-two million, one hundred fifty-three thousand, six hundred forty-one".