61055500004987 has 8 divisors (see below), whose sum is σ = 62555297444640. Its totient is φ = 59556209179840.

The previous prime is 61055500004969. The next prime is 61055500004999. The reversal of 61055500004987 is 78940000555016.

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

It is a cyclic number.

It is not a de Polignac number, because 61055500004987 - 2¹⁰ = 61055500003963 is a prime.

It is a super-3 number, since 3×61055500004987³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61055500004927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126409628 + ... + 126891705.

It is an arithmetic number, because the mean of its divisors is an integer number (7819412180580).

Almost surely, 2^{61055500004987} is an apocalyptic number.

61055500004987 is a deficient number, since it is larger than the sum of its proper divisors (1499797439653).

61055500004987 is a wasteful number, since it uses less digits than its factorization.

61055500004987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253307253.

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

The spelling of 61055500004987 in words is "sixty-one trillion, fifty-five billion, five hundred million, four thousand, nine hundred eighty-seven".