2145506652244 has 6 divisors (see below), whose sum is σ = 3754636641434. Its totient is φ = 1072753326120.

The previous prime is 2145506652239. The next prime is 2145506652259. The reversal of 2145506652244 is 4422566055412.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1318680162244 + 826826490000 = 1148338^2 + 909300^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2145506652194 and 2145506652203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268188331527 + ... + 268188331534.

Almost surely, 2^{2145506652244} is an apocalyptic number.

It is an amenable number.

2145506652244 is a deficient number, since it is larger than the sum of its proper divisors (1609129989190).

2145506652244 is a wasteful number, since it uses less digits than its factorization.

2145506652244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536376663065 (or 536376663063 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 2145506652244 in words is "two trillion, one hundred forty-five billion, five hundred six million, six hundred fifty-two thousand, two hundred forty-four".