161402447413 has 2 divisors, whose sum is σ = 161402447414. Its totient is φ = 161402447412.

The previous prime is 161402447411. The next prime is 161402447431. The reversal of 161402447413 is 314744204161.

161402447413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (161402447431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138341595249 + 23060852164 = 371943^2 + 151858^2 .

It is a cyclic number.

It is not a de Polignac number, because 161402447413 - 2¹ = 161402447411 is a prime.

Together with 161402447411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161402447411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80701223706 + 80701223707.

It is an arithmetic number, because the mean of its divisors is an integer number (80701223707).

Almost surely, 2^161402447413 is an apocalyptic number.

It is an amenable number.

161402447413 is a deficient number, since it is larger than the sum of its proper divisors (1).

161402447413 is an equidigital number, since it uses as much as digits as its factorization.

161402447413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 161402447413 in words is "one hundred sixty-one billion, four hundred two million, four hundred forty-seven thousand, four hundred thirteen".