16563703045 has 8 divisors (see below), whose sum is σ = 19897844760. Its totient is φ = 13236695040.

The previous prime is 16563703019. The next prime is 16563703073. The reversal of 16563703045 is 54030736561.

It can be written as a sum of positive squares in 4 ways, for example, as 2054536929 + 14509166116 = 45327^2 + 120454^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-16563703045 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16563702989 and 16563703007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778316 + ... + 1787605.

It is an arithmetic number, because the mean of its divisors is an integer number (2487230595).

Almost surely, 2^16563703045 is an apocalyptic number.

It is an amenable number.

16563703045 is a deficient number, since it is larger than the sum of its proper divisors (3334141715).

16563703045 is an equidigital number, since it uses as much as digits as its factorization.

16563703045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566855.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 16563703045 in words is "sixteen billion, five hundred sixty-three million, seven hundred three thousand, forty-five".