2145144045061 has 2 divisors, whose sum is σ = 2145144045062. Its totient is φ = 2145144045060.

The previous prime is 2145144045047. The next prime is 2145144045101. The reversal of 2145144045061 is 1605404415412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1336729068900 + 808414976161 = 1156170^2 + 899119^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145144045061 - 2¹³ = 2145144036869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2145144045061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145144045001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072572022530 + 1072572022531.

It is an arithmetic number, because the mean of its divisors is an integer number (1072572022531).

Almost surely, 2^{2145144045061} is an apocalyptic number.

It is an amenable number.

2145144045061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145144045061 is an equidigital number, since it uses as much as digits as its factorization.

2145144045061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 2145144045061 in words is "two trillion, one hundred forty-five billion, one hundred forty-four million, forty-five thousand, sixty-one".