163543511517101 has 2 divisors, whose sum is σ = 163543511517102. Its totient is φ = 163543511517100.

The previous prime is 163543511517031. The next prime is 163543511517119. The reversal of 163543511517101 is 101715115345361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121280640537001 + 42262870980100 = 11012749^2 + 6500990^2 .

It is a cyclic number.

It is not a de Polignac number, because 163543511517101 - 2¹⁸ = 163543511254957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163543511510101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81771755758550 + 81771755758551.

It is an arithmetic number, because the mean of its divisors is an integer number (81771755758551).

Almost surely, 2^{163543511517101} is an apocalyptic number.

It is an amenable number.

163543511517101 is a deficient number, since it is larger than the sum of its proper divisors (1).

163543511517101 is an equidigital number, since it uses as much as digits as its factorization.

163543511517101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 44.

The spelling of 163543511517101 in words is "one hundred sixty-three trillion, five hundred forty-three billion, five hundred eleven million, five hundred seventeen thousand, one hundred one".