163531166087 has 2 divisors, whose sum is σ = 163531166088. Its totient is φ = 163531166086.

The previous prime is 163531166033. The next prime is 163531166147. The reversal of 163531166087 is 780661135361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163531166087 - 2¹² = 163531161991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163531160087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81765583043 + 81765583044.

It is an arithmetic number, because the mean of its divisors is an integer number (81765583044).

Almost surely, 2^163531166087 is an apocalyptic number.

163531166087 is a deficient number, since it is larger than the sum of its proper divisors (1).

163531166087 is an equidigital number, since it uses as much as digits as its factorization.

163531166087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 163531166087 in words is "one hundred sixty-three billion, five hundred thirty-one million, one hundred sixty-six thousand, eighty-seven".