16363452643 has 4 divisors (see below), whose sum is σ = 16363982448. Its totient is φ = 16362922840.

The previous prime is 16363452583. The next prime is 16363452653. The reversal of 16363452643 is 34625436361.

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

It is a cyclic number.

It is not a de Polignac number, because 16363452643 - 2¹⁷ = 16363321571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16363452643.

It is not an unprimeable number, because it can be changed into a prime (16363452653) 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, 215503 + ... + 281368.

It is an arithmetic number, because the mean of its divisors is an integer number (4090995612).

Almost surely, 2^16363452643 is an apocalyptic number.

16363452643 is a deficient number, since it is larger than the sum of its proper divisors (529805).

16363452643 is an equidigital number, since it uses as much as digits as its factorization.

16363452643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529804.

The product of its digits is 933120, while the sum is 43.

The spelling of 16363452643 in words is "sixteen billion, three hundred sixty-three million, four hundred fifty-two thousand, six hundred forty-three".