1106615556666 has 64 divisors (see below), whose sum is σ = 2472501749760. Its totient is φ = 366869200320.

The previous prime is 1106615556661. The next prime is 1106615556707. The reversal of 1106615556666 is 6666555166011.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1106615556661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94439440 + ... + 94451156.

It is an arithmetic number, because the mean of its divisors is an integer number (38632839840).

Almost surely, 2^{1106615556666} is an apocalyptic number.

1106615556666 is an abundant number, since it is smaller than the sum of its proper divisors (1365886193094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1106615556666 is a wasteful number, since it uses less digits than its factorization.

1106615556666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21076 (or 21070 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 1106615556666 in words is "one trillion, one hundred six billion, six hundred fifteen million, five hundred fifty-six thousand, six hundred sixty-six".