16630935649 has 4 divisors (see below), whose sum is σ = 16642740420. Its totient is φ = 16619130880.

The previous prime is 16630935637. The next prime is 16630935653. The reversal of 16630935649 is 94653903661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94653903661 = 31 ⋅3053351731.

It can be written as a sum of positive squares in 2 ways, for example, as 2477550625 + 14153385024 = 49775^2 + 118968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16630935649 is a prime.

It is a super-2 number, since 2×16630935649² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16630935596 and 16630935605.

It is not an unprimeable number, because it can be changed into a prime (16630935449) 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, 5900272 + ... + 5903089.

It is an arithmetic number, because the mean of its divisors is an integer number (4160685105).

Almost surely, 2^16630935649 is an apocalyptic number.

It is an amenable number.

16630935649 is a deficient number, since it is larger than the sum of its proper divisors (11804771).

16630935649 is a wasteful number, since it uses less digits than its factorization.

16630935649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11804770.

The product of its (nonzero) digits is 3149280, while the sum is 52.

The spelling of 16630935649 in words is "sixteen billion, six hundred thirty million, nine hundred thirty-five thousand, six hundred forty-nine".