16346640653 has 8 divisors (see below), whose sum is σ = 18690126720. Its totient is φ = 14005217520.

The previous prime is 16346640643. The next prime is 16346640679. The reversal of 16346640653 is 35604664361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16346640653 - 2⁸ = 16346640397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16346640613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498713 + ... + 530478.

It is an arithmetic number, because the mean of its divisors is an integer number (2336265840).

Almost surely, 2^16346640653 is an apocalyptic number.

It is an amenable number.

16346640653 is a deficient number, since it is larger than the sum of its proper divisors (2343486067).

16346640653 is a wasteful number, since it uses less digits than its factorization.

16346640653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031467.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 16346640653 in words is "sixteen billion, three hundred forty-six million, six hundred forty thousand, six hundred fifty-three".