161928070427 has 2 divisors, whose sum is σ = 161928070428. Its totient is φ = 161928070426.

The previous prime is 161928070379. The next prime is 161928070429. The reversal of 161928070427 is 724070829161.

161928070427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (724070829161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161928070427 - 2¹² = 161928066331 is a prime.

It is a super-2 number, since 2×161928070427² (a number of 23 digits) contains 22 as substring.

Together with 161928070429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161928070429) 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, 80964035213 + 80964035214.

It is an arithmetic number, because the mean of its divisors is an integer number (80964035214).

Almost surely, 2^161928070427 is an apocalyptic number.

161928070427 is a deficient number, since it is larger than the sum of its proper divisors (1).

161928070427 is an equidigital number, since it uses as much as digits as its factorization.

161928070427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

Adding to 161928070427 its reverse (724070829161), we get a palindrome (885998899588).

The spelling of 161928070427 in words is "one hundred sixty-one billion, nine hundred twenty-eight million, seventy thousand, four hundred twenty-seven".