1066542636347 has 4 divisors (see below), whose sum is σ = 1066835404920. Its totient is φ = 1066249867776.

The previous prime is 1066542636307. The next prime is 1066542636359. The reversal of 1066542636347 is 7436362456601.

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 1066542636347 - 2²⁸ = 1066274200891 is a prime.

It is a super-2 number, since 2×1066542636347² (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 (1066542636307) 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, 146378822 + ... + 146386107.

It is an arithmetic number, because the mean of its divisors is an integer number (266708851230).

Almost surely, 2^{1066542636347} is an apocalyptic number.

1066542636347 is a deficient number, since it is larger than the sum of its proper divisors (292768573).

1066542636347 is an equidigital number, since it uses as much as digits as its factorization.

1066542636347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292768572.

The product of its (nonzero) digits is 13063680, while the sum is 53.

The spelling of 1066542636347 in words is "one trillion, sixty-six billion, five hundred forty-two million, six hundred thirty-six thousand, three hundred forty-seven".