8601961099 has 2 divisors, whose sum is σ = 8601961100. Its totient is φ = 8601961098.

The previous prime is 8601961073. The next prime is 8601961111. The reversal of 8601961099 is 9901691068.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8601961099 - 2⁷ = 8601960971 is a prime.

It is not a weakly prime, because it can be changed into another prime (8601964099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4300980549 + 4300980550.

It is an arithmetic number, because the mean of its divisors is an integer number (4300980550).

Almost surely, 2^8601961099 is an apocalyptic number.

8601961099 is a deficient number, since it is larger than the sum of its proper divisors (1).

8601961099 is an equidigital number, since it uses as much as digits as its factorization.

8601961099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 8601961099 is about 92746.7578894271. The cubic root of 8601961099 is about 2048.9553351968.

The spelling of 8601961099 in words is "eight billion, six hundred one million, nine hundred sixty-one thousand, ninety-nine".