161156010140399 has 2 divisors, whose sum is σ = 161156010140400. Its totient is φ = 161156010140398.

The previous prime is 161156010140387. The next prime is 161156010140479. The reversal of 161156010140399 is 993041010651161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161156010140399 - 2⁴⁴ = 143563824095983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161156010140309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80578005070199 + 80578005070200.

It is an arithmetic number, because the mean of its divisors is an integer number (80578005070200).

Almost surely, 2^{161156010140399} is an apocalyptic number.

161156010140399 is a deficient number, since it is larger than the sum of its proper divisors (1).

161156010140399 is an equidigital number, since it uses as much as digits as its factorization.

161156010140399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 47.

The spelling of 161156010140399 in words is "one hundred sixty-one trillion, one hundred fifty-six billion, ten million, one hundred forty thousand, three hundred ninety-nine".