61055555056 has 40 divisors (see below), whose sum is σ = 118699590240. Its totient is φ = 30423515904.

The previous prime is 61055555053. The next prime is 61055555083. The reversal of 61055555056 is 65055555016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055555053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14685330 + ... + 14689486.

It is an arithmetic number, because the mean of its divisors is an integer number (2967489756).

Almost surely, 2^61055555056 is an apocalyptic number.

It is an amenable number.

61055555056 is a deficient number, since it is larger than the sum of its proper divisors (57644035184).

61055555056 is a wasteful number, since it uses less digits than its factorization.

61055555056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7081 (or 7075 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 43.

The spelling of 61055555056 in words is "sixty-one billion, fifty-five million, five hundred fifty-five thousand, fifty-six".