77630665163 has 2 divisors, whose sum is σ = 77630665164. Its totient is φ = 77630665162.

The previous prime is 77630665159. The next prime is 77630665213. The reversal of 77630665163 is 36156603677.

It is an a-pointer prime, because the next prime (77630665213) can be obtained adding 77630665163 to its sum of digits (50).

It is a weak prime.

It is an emirp because it is prime and its reverse (36156603677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77630665163 - 2² = 77630665159 is a prime.

It is a super-3 number, since 3×77630665163³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (77630605163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38815332581 + 38815332582.

It is an arithmetic number, because the mean of its divisors is an integer number (38815332582).

Almost surely, 2^77630665163 is an apocalyptic number.

77630665163 is a deficient number, since it is larger than the sum of its proper divisors (1).

77630665163 is an equidigital number, since it uses as much as digits as its factorization.

77630665163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 77630665163 in words is "seventy-seven billion, six hundred thirty million, six hundred sixty-five thousand, one hundred sixty-three".