1628000163563 has 4 divisors (see below), whose sum is σ = 1628087376288. Its totient is φ = 1627912950840.

The previous prime is 1628000163547. The next prime is 1628000163571. The reversal of 1628000163563 is 3653610008261.

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 1628000163563 - 2⁴ = 1628000163547 is a prime.

It is a super-2 number, since 2×1628000163563² (a number of 25 digits) contains 22 as substring.

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 1628000163563.

It is not an unprimeable number, because it can be changed into a prime (1628000193563) 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, 43578356 + ... + 43615697.

It is an arithmetic number, because the mean of its divisors is an integer number (407021844072).

Almost surely, 2^{1628000163563} is an apocalyptic number.

1628000163563 is a deficient number, since it is larger than the sum of its proper divisors (87212725).

1628000163563 is an equidigital number, since it uses as much as digits as its factorization.

1628000163563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87212724.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 1628000163563 in words is "one trillion, six hundred twenty-eight billion, one hundred sixty-three thousand, five hundred sixty-three".