16625230066 has 4 divisors (see below), whose sum is σ = 24937845102. Its totient is φ = 8312615032.

The previous prime is 16625230031. The next prime is 16625230067. The reversal of 16625230066 is 66003252661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66003252661 = 787 ⋅83866903.

It can be written as a sum of positive squares in only one way, i.e., 10607970025 + 6017260041 = 102995^2 + 77571^2 .

It is not an unprimeable number, because it can be changed into a prime (16625230067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4156307515 + ... + 4156307518.

Almost surely, 2^16625230066 is an apocalyptic number.

16625230066 is a deficient number, since it is larger than the sum of its proper divisors (8312615036).

16625230066 is an equidigital number, since it uses as much as digits as its factorization.

16625230066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8312615035.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 16625230066 in words is "sixteen billion, six hundred twenty-five million, two hundred thirty thousand, sixty-six".