16630687853 has 12 divisors (see below), whose sum is σ = 18447614388. Its totient is φ = 14976973440.

The previous prime is 16630687817. The next prime is 16630687861. The reversal of 16630687853 is 35878603661.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5446144804 + 11184543049 = 73798^2 + 105757^2 .

It is not a de Polignac number, because 16630687853 - 2¹⁰ = 16630686829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16630687795 and 16630687804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16630687873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1193150 + ... + 1207007.

It is an arithmetic number, because the mean of its divisors is an integer number (1537301199).

Almost surely, 2^16630687853 is an apocalyptic number.

16630687853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16630687853 is a deficient number, since it is larger than the sum of its proper divisors (1816926535).

16630687853 is a wasteful number, since it uses less digits than its factorization.

16630687853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400224 (or 2400211 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 16630687853 in words is "sixteen billion, six hundred thirty million, six hundred eighty-seven thousand, eight hundred fifty-three".