849192146681561 has 8 divisors (see below), whose sum is σ = 886116336673344. Its totient is φ = 812268189382320.

The previous prime is 849192146681443. The next prime is 849192146681563. The reversal of 849192146681561 is 165186641291948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849192146681561 is a prime.

It is a super-2 number, since 2×849192146681561² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (849192146681563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50695166 + ... + 65332871.

It is an arithmetic number, because the mean of its divisors is an integer number (110764542084168).

Almost surely, 2^{849192146681561} is an apocalyptic number.

It is an amenable number.

849192146681561 is a deficient number, since it is larger than the sum of its proper divisors (36924189991783).

849192146681561 is a wasteful number, since it uses less digits than its factorization.

849192146681561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116346271.

The product of its digits is 179159040, while the sum is 71.

The spelling of 849192146681561 in words is "eight hundred forty-nine trillion, one hundred ninety-two billion, one hundred forty-six million, six hundred eighty-one thousand, five hundred sixty-one".