100077800689 has 2 divisors, whose sum is σ = 100077800690. Its totient is φ = 100077800688.

The previous prime is 100077800677. The next prime is 100077800707. The reversal of 100077800689 is 986008770001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76858136289 + 23219664400 = 277233^2 + 152380^2 .

It is an emirp because it is prime and its reverse (986008770001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100077800689 - 2⁵ = 100077800657 is a prime.

It is not a weakly prime, because it can be changed into another prime (100077800609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50038900344 + 50038900345.

It is an arithmetic number, because the mean of its divisors is an integer number (50038900345).

Almost surely, 2^100077800689 is an apocalyptic number.

It is an amenable number.

100077800689 is a deficient number, since it is larger than the sum of its proper divisors (1).

100077800689 is an equidigital number, since it uses as much as digits as its factorization.

100077800689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 100077800689 in words is "one hundred billion, seventy-seven million, eight hundred thousand, six hundred eighty-nine".