870638009099 has 2 divisors, whose sum is σ = 870638009100. Its totient is φ = 870638009098.

The previous prime is 870638009069. The next prime is 870638009107. The reversal of 870638009099 is 990900836078.

870638009099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870638009099 is a prime.

It is not a weakly prime, because it can be changed into another prime (870638009009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435319004549 + 435319004550.

It is an arithmetic number, because the mean of its divisors is an integer number (435319004550).

Almost surely, 2^870638009099 is an apocalyptic number.

870638009099 is a deficient number, since it is larger than the sum of its proper divisors (1).

870638009099 is an equidigital number, since it uses as much as digits as its factorization.

870638009099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 870638009099 in words is "eight hundred seventy billion, six hundred thirty-eight million, nine thousand, ninety-nine".