842454116691 has 16 divisors (see below), whose sum is σ = 1226695628928. Its totient is φ = 510033326400.

The previous prime is 842454116689. The next prime is 842454116701. The reversal of 842454116691 is 196611454248.

It is not a de Polignac number, because 842454116691 - 2¹ = 842454116689 is a prime.

It is a super-2 number, since 2×842454116691² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (842454116191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13591765 + ... + 13653606.

It is an arithmetic number, because the mean of its divisors is an integer number (76668476808).

Almost surely, 2^842454116691 is an apocalyptic number.

842454116691 is a deficient number, since it is larger than the sum of its proper divisors (384241512237).

842454116691 is a wasteful number, since it uses less digits than its factorization.

842454116691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27246322.

The product of its digits is 1658880, while the sum is 51.

The spelling of 842454116691 in words is "eight hundred forty-two billion, four hundred fifty-four million, one hundred sixteen thousand, six hundred ninety-one".