16461637513 has 4 divisors (see below), whose sum is σ = 16462292688. Its totient is φ = 16460982340.

The previous prime is 16461637501. The next prime is 16461637519. The reversal of 16461637513 is 31573616461.

It is a happy number.

16461637513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16461637513 - 2⁹ = 16461637001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16461637513.

It is not an unprimeable number, because it can be changed into a prime (16461637519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288331 + ... + 340672.

It is an arithmetic number, because the mean of its divisors is an integer number (4115573172).

Almost surely, 2^16461637513 is an apocalyptic number.

It is an amenable number.

16461637513 is a deficient number, since it is larger than the sum of its proper divisors (655175).

16461637513 is an equidigital number, since it uses as much as digits as its factorization.

16461637513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655174.

The product of its digits is 272160, while the sum is 43.

The spelling of 16461637513 in words is "sixteen billion, four hundred sixty-one million, six hundred thirty-seven thousand, five hundred thirteen".