1066553620031 has 4 divisors (see below), whose sum is σ = 1066563675600. Its totient is φ = 1066543564464.

The previous prime is 1066553620009. The next prime is 1066553620039. The reversal of 1066553620031 is 1300263556601.

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

It is a cyclic number.

It is not a de Polignac number, because 1066553620031 - 2³⁰ = 1065479878207 is a prime.

It is a super-2 number, since 2×1066553620031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066553620039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4866971 + ... + 5081388.

It is an arithmetic number, because the mean of its divisors is an integer number (266640918900).

Almost surely, 2^{1066553620031} is an apocalyptic number.

1066553620031 is a deficient number, since it is larger than the sum of its proper divisors (10055569).

1066553620031 is an equidigital number, since it uses as much as digits as its factorization.

1066553620031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055568.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 1066553620031 in words is "one trillion, sixty-six billion, five hundred fifty-three million, six hundred twenty thousand, thirty-one".