16506030634 has 4 divisors (see below), whose sum is σ = 24759045954. Its totient is φ = 8253015316.

The previous prime is 16506030613. The next prime is 16506030647. The reversal of 16506030634 is 43603060561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43603060561 = 136237 ⋅320053.

It can be written as a sum of positive squares in only one way, i.e., 15650760609 + 855270025 = 125103^2 + 29245^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16506030634.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4126507657 + ... + 4126507660.

Almost surely, 2^16506030634 is an apocalyptic number.

16506030634 is a deficient number, since it is larger than the sum of its proper divisors (8253015320).

16506030634 is an equidigital number, since it uses as much as digits as its factorization.

16506030634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253015319.

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 16506030634 in words is "sixteen billion, five hundred six million, thirty thousand, six hundred thirty-four".