60511116061661 has 4 divisors (see below), whose sum is σ = 60511786880412. Its totient is φ = 60510445242912.

The previous prime is 60511116061657. The next prime is 60511116061699. The reversal of 60511116061661 is 16616061111506.

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 25517904825625 + 34993211236036 = 5051525^2 + 5915506^2 .

It is a cyclic number.

It is not a de Polignac number, because 60511116061661 - 2² = 60511116061657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60511116061961) 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, 335274050 + ... + 335454483.

It is an arithmetic number, because the mean of its divisors is an integer number (15127946720103).

Almost surely, 2^{60511116061661} is an apocalyptic number.

It is an amenable number.

60511116061661 is a deficient number, since it is larger than the sum of its proper divisors (670818751).

60511116061661 is an equidigital number, since it uses as much as digits as its factorization.

60511116061661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670818750.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 60511116061661 in words is "sixty trillion, five hundred eleven billion, one hundred sixteen million, sixty-one thousand, six hundred sixty-one".