1055605666666 has 16 divisors (see below), whose sum is σ = 1606697294400. Its totient is φ = 520049043360.

The previous prime is 1055605666637. The next prime is 1055605666667. The reversal of 1055605666666 is 6666665065501.

It is a super-2 number, since 2×1055605666666² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1055605666666.

It is not an unprimeable number, because it can be changed into a prime (1055605666667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2053491 + ... + 2515558.

It is an arithmetic number, because the mean of its divisors is an integer number (100418580900).

Almost surely, 2^{1055605666666} is an apocalyptic number.

1055605666666 is a deficient number, since it is larger than the sum of its proper divisors (551091627734).

1055605666666 is a wasteful number, since it uses less digits than its factorization.

1055605666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570749.

The product of its (nonzero) digits is 34992000, while the sum is 58.

It can be divided in two parts, 1055605 and 666666, that added together give a palindrome (1722271).

The spelling of 1055605666666 in words is "one trillion, fifty-five billion, six hundred five million, six hundred sixty-six thousand, six hundred sixty-six".