1066606005615 has 64 divisors (see below), whose sum is σ = 1771120391040. Its totient is φ = 547469475840.

The previous prime is 1066606005613. The next prime is 1066606005683. The reversal of 1066606005615 is 5165006066601.

It is not a de Polignac number, because 1066606005615 - 2¹ = 1066606005613 is a prime.

It is a super-2 number, since 2×1066606005615² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066606005613) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189078195 + ... + 189083835.

It is an arithmetic number, because the mean of its divisors is an integer number (27673756110).

Almost surely, 2^{1066606005615} is an apocalyptic number.

1066606005615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1066606005615 is a deficient number, since it is larger than the sum of its proper divisors (704514385425).

1066606005615 is a wasteful number, since it uses less digits than its factorization.

1066606005615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 1066606005615 in words is "one trillion, sixty-six billion, six hundred six million, five thousand, six hundred fifteen".