61055556008 has 8 divisors (see below), whose sum is σ = 114479167530. Its totient is φ = 30527778000.

The previous prime is 61055555959. The next prime is 61055556043. The reversal of 61055556008 is 80065555016.

It can be written as a sum of positive squares in only one way, i.e., 59984826724 + 1070729284 = 244918^2 + 32722^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 3815972243 + ... + 3815972258.

Almost surely, 2^61055556008 is an apocalyptic number.

It is an amenable number.

61055556008 is a deficient number, since it is larger than the sum of its proper divisors (53423611522).

61055556008 is a wasteful number, since it uses less digits than its factorization.

61055556008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631944507 (or 7631944503 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 61055556008 in words is "sixty-one billion, fifty-five million, five hundred fifty-six thousand, eight".