677388495613 has 2 divisors, whose sum is σ = 677388495614. Its totient is φ = 677388495612.

The previous prime is 677388495611. The next prime is 677388495659. The reversal of 677388495613 is 316594883776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514093302009 + 163295193604 = 717003^2 + 404098^2 .

It is a cyclic number.

It is not a de Polignac number, because 677388495613 - 2¹ = 677388495611 is a prime.

Together with 677388495611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677388495611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338694247806 + 338694247807.

It is an arithmetic number, because the mean of its divisors is an integer number (338694247807).

Almost surely, 2^677388495613 is an apocalyptic number.

It is an amenable number.

677388495613 is a deficient number, since it is larger than the sum of its proper divisors (1).

677388495613 is an equidigital number, since it uses as much as digits as its factorization.

677388495613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 182891520, while the sum is 67.

The spelling of 677388495613 in words is "six hundred seventy-seven billion, three hundred eighty-eight million, four hundred ninety-five thousand, six hundred thirteen".