161502040247 has 2 divisors, whose sum is σ = 161502040248. Its totient is φ = 161502040246.

The previous prime is 161502040229. The next prime is 161502040279. The reversal of 161502040247 is 742040205161.

It is an a-pointer prime, because the next prime (161502040279) can be obtained adding 161502040247 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161502040247 - 2¹² = 161502036151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161502040207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80751020123 + 80751020124.

It is an arithmetic number, because the mean of its divisors is an integer number (80751020124).

Almost surely, 2^161502040247 is an apocalyptic number.

161502040247 is a deficient number, since it is larger than the sum of its proper divisors (1).

161502040247 is an equidigital number, since it uses as much as digits as its factorization.

161502040247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 161502040247 in words is "one hundred sixty-one billion, five hundred two million, forty thousand, two hundred forty-seven".