1666010501061 has 8 divisors (see below), whose sum is σ = 2221439553600. Its totient is φ = 1110627557952.

The previous prime is 1666010501059. The next prime is 1666010501083. The reversal of 1666010501061 is 1601050106661.

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

It is not a de Polignac number, because 1666010501061 - 2¹ = 1666010501059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666010509061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11442961 + ... + 11587638.

It is an arithmetic number, because the mean of its divisors is an integer number (277679944200).

Almost surely, 2^{1666010501061} is an apocalyptic number.

It is an amenable number.

1666010501061 is a deficient number, since it is larger than the sum of its proper divisors (555429052539).

1666010501061 is a wasteful number, since it uses less digits than its factorization.

1666010501061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23054715.

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 1666010501061 in words is "one trillion, six hundred sixty-six billion, ten million, five hundred one thousand, sixty-one".