798555635161 has 4 divisors (see below), whose sum is σ = 798607562112. Its totient is φ = 798503708212.

The previous prime is 798555635153. The next prime is 798555635179. The reversal of 798555635161 is 161536555897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 798555635161 - 2³ = 798555635153 is a prime.

It is a super-2 number, since 2×798555635161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 798555635161.

It is not an unprimeable number, because it can be changed into a prime (798555635261) 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 3 ways as a sum of consecutive naturals, for example, 25940401 + ... + 25971166.

It is an arithmetic number, because the mean of its divisors is an integer number (199651890528).

Almost surely, 2^798555635161 is an apocalyptic number.

It is an amenable number.

798555635161 is a deficient number, since it is larger than the sum of its proper divisors (51926951).

798555635161 is a wasteful number, since it uses less digits than its factorization.

798555635161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51926950.

The product of its digits is 34020000, while the sum is 61.

The spelling of 798555635161 in words is "seven hundred ninety-eight billion, five hundred fifty-five million, six hundred thirty-five thousand, one hundred sixty-one".