163491148811 has 8 divisors (see below), whose sum is σ = 163594577664. Its totient is φ = 163387756840.

The previous prime is 163491148781. The next prime is 163491148813. The reversal of 163491148811 is 118841194361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163491148811 - 2¹⁸ = 163490886667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163491148813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18559370 + ... + 18568176.

It is an arithmetic number, because the mean of its divisors is an integer number (20449322208).

Almost surely, 2^163491148811 is an apocalyptic number.

163491148811 is a deficient number, since it is larger than the sum of its proper divisors (103428853).

163491148811 is an equidigital number, since it uses as much as digits as its factorization.

163491148811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18441.

The product of its digits is 165888, while the sum is 47.

The spelling of 163491148811 in words is "one hundred sixty-three billion, four hundred ninety-one million, one hundred forty-eight thousand, eight hundred eleven".