60561600655561 has 4 divisors (see below), whose sum is σ = 61554413781124. Its totient is φ = 59568787530000.

The previous prime is 60561600655537. The next prime is 60561600655631. The reversal of 60561600655561 is 16555600616506.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23111863950400 + 37449736705161 = 4807480^2 + 6119619^2 .

It is a cyclic number.

It is not a de Polignac number, because 60561600655561 - 2¹⁹ = 60561600131273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 60561600655499 and 60561600655508.

It is not an unprimeable number, because it can be changed into a prime (60561600655531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496406562690 + ... + 496406562811.

It is an arithmetic number, because the mean of its divisors is an integer number (15388603445281).

Almost surely, 2^{60561600655561} is an apocalyptic number.

60561600655561 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

60561600655561 is a deficient number, since it is larger than the sum of its proper divisors (992813125563).

60561600655561 is an equidigital number, since it uses as much as digits as its factorization.

60561600655561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992813125562.

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 60561600655561 in words is "sixty trillion, five hundred sixty-one billion, six hundred million, six hundred fifty-five thousand, five hundred sixty-one".