999977648113 has 2 divisors, whose sum is σ = 999977648114. Its totient is φ = 999977648112.

The previous prime is 999977648107. The next prime is 999977648119. The reversal of 999977648113 is 311846779999.

It is a balanced prime because it is at equal distance from previous prime (999977648107) and next prime (999977648119).

It can be written as a sum of positive squares in only one way, i.e., 991412515809 + 8565132304 = 995697^2 + 92548^2 .

It is a cyclic number.

It is not a de Polignac number, because 999977648113 - 2¹⁷ = 999977517041 is a prime.

It is not a weakly prime, because it can be changed into another prime (999977648119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499988824056 + 499988824057.

It is an arithmetic number, because the mean of its divisors is an integer number (499988824057).

Almost surely, 2^999977648113 is an apocalyptic number.

It is an amenable number.

999977648113 is a deficient number, since it is larger than the sum of its proper divisors (1).

999977648113 is an equidigital number, since it uses as much as digits as its factorization.

999977648113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185177664, while the sum is 73.

The spelling of 999977648113 in words is "nine hundred ninety-nine billion, nine hundred seventy-seven million, six hundred forty-eight thousand, one hundred thirteen".