677820344163 has 4 divisors (see below), whose sum is σ = 903760458888. Its totient is φ = 451880229440.

The previous prime is 677820344137. The next prime is 677820344177. The reversal of 677820344163 is 361443028776.

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 677820344163 - 2²¹ = 677818247011 is a prime.

It is a super-2 number, since 2×677820344163² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (677820346163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112970057358 + ... + 112970057363.

It is an arithmetic number, because the mean of its divisors is an integer number (225940114722).

Almost surely, 2^677820344163 is an apocalyptic number.

677820344163 is a deficient number, since it is larger than the sum of its proper divisors (225940114725).

677820344163 is a wasteful number, since it uses less digits than its factorization.

677820344163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225940114724.

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 677820344163 in words is "six hundred seventy-seven billion, eight hundred twenty million, three hundred forty-four thousand, one hundred sixty-three".