2145489435049 has 2 divisors, whose sum is σ = 2145489435050. Its totient is φ = 2145489435048.

The previous prime is 2145489435041. The next prime is 2145489435101. The reversal of 2145489435049 is 9405349845412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1445368995225 + 700120439824 = 1202235^2 + 836732^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145489435049 - 2³ = 2145489435041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145489434984 and 2145489435002.

It is not a weakly prime, because it can be changed into another prime (2145489435041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072744717524 + 1072744717525.

It is an arithmetic number, because the mean of its divisors is an integer number (1072744717525).

Almost surely, 2^{2145489435049} is an apocalyptic number.

It is an amenable number.

2145489435049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145489435049 is an equidigital number, since it uses as much as digits as its factorization.

2145489435049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 58.

The spelling of 2145489435049 in words is "two trillion, one hundred forty-five billion, four hundred eighty-nine million, four hundred thirty-five thousand, forty-nine".