61055657618 has 8 divisors (see below), whose sum is σ = 91623785148. Its totient is φ = 30514395904.

The previous prime is 61055657609. The next prime is 61055657629. The reversal of 61055657618 is 81675655016.

It can be written as a sum of positive squares in 2 ways, for example, as 60608038969 + 447618649 = 246187^2 + 21157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 6710771 + ... + 6719862.

Almost surely, 2^61055657618 is an apocalyptic number.

61055657618 is a deficient number, since it is larger than the sum of its proper divisors (30568127530).

61055657618 is a wasteful number, since it uses less digits than its factorization.

61055657618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13432908.

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 61055657618 in words is "sixty-one billion, fifty-five million, six hundred fifty-seven thousand, six hundred eighteen".