161152308649 has 2 divisors, whose sum is σ = 161152308650. Its totient is φ = 161152308648.

The previous prime is 161152308631. The next prime is 161152308703. The reversal of 161152308649 is 946803251161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141466254400 + 19686054249 = 376120^2 + 140307^2 .

It is an emirp because it is prime and its reverse (946803251161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161152308649 - 2⁵ = 161152308617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161152308599 and 161152308608.

It is not a weakly prime, because it can be changed into another prime (161152306649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80576154324 + 80576154325.

It is an arithmetic number, because the mean of its divisors is an integer number (80576154325).

Almost surely, 2^161152308649 is an apocalyptic number.

It is an amenable number.

161152308649 is a deficient number, since it is larger than the sum of its proper divisors (1).

161152308649 is an equidigital number, since it uses as much as digits as its factorization.

161152308649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 161152308649 in words is "one hundred sixty-one billion, one hundred fifty-two million, three hundred eight thousand, six hundred forty-nine".