163775403887 has 2 divisors, whose sum is σ = 163775403888. Its totient is φ = 163775403886.

The previous prime is 163775403829. The next prime is 163775403929. The reversal of 163775403887 is 788304577361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163775403887 - 2⁶ = 163775403823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163775403587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81887701943 + 81887701944.

It is an arithmetic number, because the mean of its divisors is an integer number (81887701944).

Almost surely, 2^163775403887 is an apocalyptic number.

163775403887 is a deficient number, since it is larger than the sum of its proper divisors (1).

163775403887 is an equidigital number, since it uses as much as digits as its factorization.

163775403887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 163775403887 in words is "one hundred sixty-three billion, seven hundred seventy-five million, four hundred three thousand, eight hundred eighty-seven".