16650960437 has 4 divisors (see below), whose sum is σ = 17630428716. Its totient is φ = 15671492160.

The previous prime is 16650960433. The next prime is 16650960439. The reversal of 16650960437 is 73406905661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73406905661 = 29 ⋅2531272609.

It can be written as a sum of positive squares in 2 ways, for example, as 14302007281 + 2348953156 = 119591^2 + 48466^2 .

It is not a de Polignac number, because 16650960437 - 2² = 16650960433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16650960391 and 16650960400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16650960433) 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, 489734114 + ... + 489734147.

It is an arithmetic number, because the mean of its divisors is an integer number (4407607179).

Almost surely, 2^16650960437 is an apocalyptic number.

16650960437 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16650960437 is a deficient number, since it is larger than the sum of its proper divisors (979468279).

16650960437 is an equidigital number, since it uses as much as digits as its factorization.

16650960437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979468278.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 16650960437 in words is "sixteen billion, six hundred fifty million, nine hundred sixty thousand, four hundred thirty-seven".