1066128492073 has 4 divisors (see below), whose sum is σ = 1092131626068. Its totient is φ = 1040125358080.

The previous prime is 1066128492067. The next prime is 1066128492089. The reversal of 1066128492073 is 3702948216601.

It is a happy number.

1066128492073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 263550810384 + 802577681689 = 513372^2 + 895867^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066128492073 is a prime.

It is a super-2 number, since 2×1066128492073² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066128492973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13001566936 + ... + 13001567017.

It is an arithmetic number, because the mean of its divisors is an integer number (273032906517).

Almost surely, 2^{1066128492073} is an apocalyptic number.

It is an amenable number.

1066128492073 is a deficient number, since it is larger than the sum of its proper divisors (26003133995).

1066128492073 is an equidigital number, since it uses as much as digits as its factorization.

1066128492073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26003133994.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 1066128492073 in words is "one trillion, sixty-six billion, one hundred twenty-eight million, four hundred ninety-two thousand, seventy-three".