16203163945 has 8 divisors (see below), whose sum is σ = 19448221320. Its totient is φ = 12959581440.

The previous prime is 16203163927. The next prime is 16203164009. The reversal of 16203163945 is 54936130261.

It can be written as a sum of positive squares in 4 ways, for example, as 3323637801 + 12879526144 = 57651^2 + 113488^2 .

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

It is not a de Polignac number, because 16203163945 - 2¹⁷ = 16203032873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16203163898 and 16203163907.

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, 344400 + ... + 388609.

It is an arithmetic number, because the mean of its divisors is an integer number (2431027665).

Almost surely, 2^16203163945 is an apocalyptic number.

It is an amenable number.

16203163945 is a deficient number, since it is larger than the sum of its proper divisors (3245057375).

16203163945 is an equidigital number, since it uses as much as digits as its factorization.

16203163945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737435.

The product of its (nonzero) digits is 116640, while the sum is 40.

It can be divided in two parts, 1620316 and 3945, that added together give a palindrome (1624261).

The spelling of 16203163945 in words is "sixteen billion, two hundred three million, one hundred sixty-three thousand, nine hundred forty-five".