677147638191 has 4 divisors (see below), whose sum is σ = 902863517592. Its totient is φ = 451431758792.

The previous prime is 677147638127. The next prime is 677147638213. The reversal of 677147638191 is 191836741776.

It is a happy number.

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 677147638191 - 2⁶ = 677147638127 is a prime.

It is a super-3 number, since 3×677147638191³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677147638291) 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, 112857939696 + ... + 112857939701.

It is an arithmetic number, because the mean of its divisors is an integer number (225715879398).

Almost surely, 2^677147638191 is an apocalyptic number.

677147638191 is a deficient number, since it is larger than the sum of its proper divisors (225715879401).

677147638191 is a wasteful number, since it uses less digits than its factorization.

677147638191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225715879400.

The product of its digits is 10668672, while the sum is 60.

The spelling of 677147638191 in words is "six hundred seventy-seven billion, one hundred forty-seven million, six hundred thirty-eight thousand, one hundred ninety-one".