161540362807 has 2 divisors, whose sum is σ = 161540362808. Its totient is φ = 161540362806.

The previous prime is 161540362751. The next prime is 161540362817. The reversal of 161540362807 is 708263045161.

161540362807 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 a cyclic number.

It is not a de Polignac number, because 161540362807 - 2⁷ = 161540362679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161540362817) 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, 80770181403 + 80770181404.

It is an arithmetic number, because the mean of its divisors is an integer number (80770181404).

Almost surely, 2^161540362807 is an apocalyptic number.

161540362807 is a deficient number, since it is larger than the sum of its proper divisors (1).

161540362807 is an equidigital number, since it uses as much as digits as its factorization.

161540362807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 161540362807 in words is "one hundred sixty-one billion, five hundred forty million, three hundred sixty-two thousand, eight hundred seven".