60105066666661 has 4 divisors (see below), whose sum is σ = 60114073876492. Its totient is φ = 60096059456832.

The previous prime is 60105066666539. The next prime is 60105066666707. The reversal of 60105066666661 is 16666666050106.

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 23970913920100 + 36134152746561 = 4896010^2 + 6011169^2 .

It is a cyclic number.

It is not a de Polignac number, because 60105066666661 - 2¹⁷ = 60105066535589 is a prime.

It is a super-2 number, since 2×60105066666661² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60105066667661) 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, 4503594906 + ... + 4503608251.

It is an arithmetic number, because the mean of its divisors is an integer number (15028518469123).

Almost surely, 2^{60105066666661} is an apocalyptic number.

It is an amenable number.

60105066666661 is a deficient number, since it is larger than the sum of its proper divisors (9007209831).

60105066666661 is an equidigital number, since it uses as much as digits as its factorization.

60105066666661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9007209830.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 60105066666661 in words is "sixty trillion, one hundred five billion, sixty-six million, six hundred sixty-six thousand, six hundred sixty-one".