16650225472889 has 16 divisors (see below), whose sum is σ = 17922193437456. Its totient is φ = 15410863564800.

The previous prime is 16650225472877. The next prime is 16650225472901. The reversal of 16650225472889 is 98827452205661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16650225472877) and next prime (16650225472901).

It can be written as a sum of positive squares in 8 ways, for example, as 271328475664 + 16378896997225 = 520892^2 + 4047085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16650225472889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16650225472819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3688979 + ... + 6849015.

It is an arithmetic number, because the mean of its divisors is an integer number (1120137089841).

Almost surely, 2^{16650225472889} is an apocalyptic number.

It is an amenable number.

16650225472889 is a deficient number, since it is larger than the sum of its proper divisors (1271967964567).

16650225472889 is a wasteful number, since it uses less digits than its factorization.

16650225472889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165196.

The product of its (nonzero) digits is 116121600, while the sum is 65.

The spelling of 16650225472889 in words is "sixteen trillion, six hundred fifty billion, two hundred twenty-five million, four hundred seventy-two thousand, eight hundred eighty-nine".