161502040229 has 2 divisors, whose sum is σ = 161502040230. Its totient is φ = 161502040228.

The previous prime is 161502040213. The next prime is 161502040247. The reversal of 161502040229 is 922040205161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146307780004 + 15194260225 = 382502^2 + 123265^2 .

It is a cyclic number.

It is not a de Polignac number, because 161502040229 - 2⁴ = 161502040213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161502040195 and 161502040204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161502040279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80751020114 + 80751020115.

It is an arithmetic number, because the mean of its divisors is an integer number (80751020115).

Almost surely, 2^161502040229 is an apocalyptic number.

It is an amenable number.

161502040229 is a deficient number, since it is larger than the sum of its proper divisors (1).

161502040229 is an equidigital number, since it uses as much as digits as its factorization.

161502040229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 161502040229 in words is "one hundred sixty-one billion, five hundred two million, forty thousand, two hundred twenty-nine".