163376445649 has 4 divisors (see below), whose sum is σ = 163755509760. Its totient is φ = 162997381540.

The previous prime is 163376445647. The next prime is 163376445653. The reversal of 163376445649 is 946544673361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163376445649 - 2¹ = 163376445647 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163376445593 and 163376445602.

It is not an unprimeable number, because it can be changed into a prime (163376445647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189531409 + ... + 189532270.

It is an arithmetic number, because the mean of its divisors is an integer number (40938877440).

Almost surely, 2^163376445649 is an apocalyptic number.

It is an amenable number.

163376445649 is a deficient number, since it is larger than the sum of its proper divisors (379064111).

163376445649 is an equidigital number, since it uses as much as digits as its factorization.

163376445649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379064110.

The product of its digits is 39191040, while the sum is 58.

The spelling of 163376445649 in words is "one hundred sixty-three billion, three hundred seventy-six million, four hundred forty-five thousand, six hundred forty-nine".