161550600072887 has 2 divisors, whose sum is σ = 161550600072888. Its totient is φ = 161550600072886.

The previous prime is 161550600072853. The next prime is 161550600072899. The reversal of 161550600072887 is 788270006055161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161550600072887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161550609072887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80775300036443 + 80775300036444.

It is an arithmetic number, because the mean of its divisors is an integer number (80775300036444).

Almost surely, 2^{161550600072887} is an apocalyptic number.

161550600072887 is a deficient number, since it is larger than the sum of its proper divisors (1).

161550600072887 is an equidigital number, since it uses as much as digits as its factorization.

161550600072887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 161550600072887 in words is "one hundred sixty-one trillion, five hundred fifty billion, six hundred million, seventy-two thousand, eight hundred eighty-seven".