2069777650 has 12 divisors (see below), whose sum is σ = 3849786522. Its totient is φ = 827911040.

The previous prime is 2069777617. The next prime is 2069777653. The reversal of 2069777650 is 567779602.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1924840129 + 144937521 = 43873^2 + 12039^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2069777594 and 2069777603.

It is not an unprimeable number, because it can be changed into a prime (2069777653) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 20697727 + ... + 20697826.

Almost surely, 2^2069777650 is an apocalyptic number.

2069777650 is a deficient number, since it is larger than the sum of its proper divisors (1780008872).

2069777650 is a wasteful number, since it uses less digits than its factorization.

2069777650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41395565 (or 41395560 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 49.

The square root of 2069777650 is about 45494.8090445492. The cubic root of 2069777650 is about 1274.4062646293.

The spelling of 2069777650 in words is "two billion, sixty-nine million, seven hundred seventy-seven thousand, six hundred fifty".