8161057946099 has 2 divisors, whose sum is σ = 8161057946100. Its totient is φ = 8161057946098.

The previous prime is 8161057946059. The next prime is 8161057946189. The reversal of 8161057946099 is 9906497501618.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8161057946099 is a prime.

It is not a weakly prime, because it can be changed into another prime (8161057946059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4080528973049 + 4080528973050.

It is an arithmetic number, because the mean of its divisors is an integer number (4080528973050).

Almost surely, 2^{8161057946099} is an apocalyptic number.

8161057946099 is a deficient number, since it is larger than the sum of its proper divisors (1).

8161057946099 is an equidigital number, since it uses as much as digits as its factorization.

8161057946099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29393280, while the sum is 65.

The spelling of 8161057946099 in words is "eight trillion, one hundred sixty-one billion, fifty-seven million, nine hundred forty-six thousand, ninety-nine".