163099973952446 has 4 divisors (see below), whose sum is σ = 244649960928672. Its totient is φ = 81549986976222.

The previous prime is 163099973952431. The next prime is 163099973952469. The reversal of 163099973952446 is 644259379990361.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40774993488110 + ... + 40774993488113.

It is an arithmetic number, because the mean of its divisors is an integer number (61162490232168).

Almost surely, 2^{163099973952446} is an apocalyptic number.

163099973952446 is a deficient number, since it is larger than the sum of its proper divisors (81549986976226).

163099973952446 is an equidigital number, since it uses as much as digits as its factorization.

163099973952446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81549986976225.

The product of its (nonzero) digits is 2380855680, while the sum is 77.

The spelling of 163099973952446 in words is "one hundred sixty-three trillion, ninety-nine billion, nine hundred seventy-three million, nine hundred fifty-two thousand, four hundred forty-six".