1066677266655 has 192 divisors, whose sum is σ = 2549546108928. Its totient is φ = 398134932480.

The previous prime is 1066677266651. The next prime is 1066677266701. The reversal of 1066677266655 is 5566627766601.

It is not a de Polignac number, because 1066677266655 - 2² = 1066677266651 is a prime.

It is a super-2 number, since 2×1066677266655² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 1066677266592 and 1066677266601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066677266651) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1346662 + ... + 1986668.

It is an arithmetic number, because the mean of its divisors is an integer number (13278885984).

Almost surely, 2^{1066677266655} is an apocalyptic number.

1066677266655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1066677266655 is an abundant number, since it is smaller than the sum of its proper divisors (1482868842273).

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

1066677266655 is a wasteful number, since it uses less digits than its factorization.

1066677266655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640086 (or 640083 counting only the distinct ones).

The product of its (nonzero) digits is 114307200, while the sum is 63.

The spelling of 1066677266655 in words is "one trillion, sixty-six billion, six hundred seventy-seven million, two hundred sixty-six thousand, six hundred fifty-five".