61011055568 has 10 divisors (see below), whose sum is σ = 118208920194. Its totient is φ = 30505527776.

The previous prime is 61011055561. The next prime is 61011055663. The reversal of 61011055568 is 86555011016.

It can be written as a sum of positive squares in only one way, i.e., 43600780864 + 17410274704 = 208808^2 + 131948^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61011055561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1906595471 + ... + 1906595502.

Almost surely, 2^61011055568 is an apocalyptic number.

It is an amenable number.

61011055568 is a deficient number, since it is larger than the sum of its proper divisors (57197864626).

61011055568 is a wasteful number, since it uses less digits than its factorization.

61011055568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813190981 (or 3813190975 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 38.

The spelling of 61011055568 in words is "sixty-one billion, eleven million, fifty-five thousand, five hundred sixty-eight".