2061775556 has 6 divisors (see below), whose sum is σ = 3608107230. Its totient is φ = 1030887776.

The previous prime is 2061775553. The next prime is 2061775571. The reversal of 2061775556 is 6555771602.

It can be written as a sum of positive squares in only one way, i.e., 1898344900 + 163430656 = 43570^2 + 12784^2 .

It is not an unprimeable number, because it can be changed into a prime (2061775553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257721941 + ... + 257721948.

It is an arithmetic number, because the mean of its divisors is an integer number (601351205).

Almost surely, 2^2061775556 is an apocalyptic number.

It is an amenable number.

2061775556 is a deficient number, since it is larger than the sum of its proper divisors (1546331674).

2061775556 is a wasteful number, since it uses less digits than its factorization.

2061775556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515443893 (or 515443891 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 44.

The square root of 2061775556 is about 45406.7787450288. The cubic root of 2061775556 is about 1272.7617901950.

The spelling of 2061775556 in words is "two billion, sixty-one million, seven hundred seventy-five thousand, five hundred fifty-six".