8574066772081 has 4 divisors (see below), whose sum is σ = 8574313947892. Its totient is φ = 8573819596272.

The previous prime is 8574066772079. The next prime is 8574066772177. The reversal of 8574066772081 is 1802776604758.

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 4016657305600 + 4557409466481 = 2004160^2 + 2134809^2 .

It is a cyclic number.

It is not a de Polignac number, because 8574066772081 - 2¹ = 8574066772079 is a prime.

It is a super-2 number, since 2×8574066772081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8574066772681) 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, 123535866 + ... + 123605251.

It is an arithmetic number, because the mean of its divisors is an integer number (2143578486973).

Almost surely, 2^{8574066772081} is an apocalyptic number.

It is an amenable number.

8574066772081 is a deficient number, since it is larger than the sum of its proper divisors (247175811).

8574066772081 is a wasteful number, since it uses less digits than its factorization.

8574066772081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247175810.

The product of its (nonzero) digits is 31610880, while the sum is 61.

The spelling of 8574066772081 in words is "eight trillion, five hundred seventy-four billion, sixty-six million, seven hundred seventy-two thousand, eighty-one".