842654865739 has 4 divisors (see below), whose sum is σ = 847824527656. Its totient is φ = 837485203824.

The previous prime is 842654865643. The next prime is 842654865751. The reversal of 842654865739 is 937568456248.

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 842654865739 - 2¹³ = 842654857547 is a prime.

It is a super-2 number, since 2×842654865739² (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 (842654865769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584830714 + ... + 2584831039.

It is an arithmetic number, because the mean of its divisors is an integer number (211956131914).

Almost surely, 2^842654865739 is an apocalyptic number.

842654865739 is a deficient number, since it is larger than the sum of its proper divisors (5169661917).

842654865739 is a wasteful number, since it uses less digits than its factorization.

842654865739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169661916.

The product of its digits is 348364800, while the sum is 67.

The spelling of 842654865739 in words is "eight hundred forty-two billion, six hundred fifty-four million, eight hundred sixty-five thousand, seven hundred thirty-nine".