16620435753 has 8 divisors (see below), whose sum is σ = 22165638528. Its totient is φ = 11077761744.

The previous prime is 16620435737. The next prime is 16620435773. The reversal of 16620435753 is 35753402661.

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

It is not a de Polignac number, because 16620435753 - 2⁴ = 16620435737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16620435773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616801 + ... + 643182.

It is an arithmetic number, because the mean of its divisors is an integer number (2770704816).

Almost surely, 2^16620435753 is an apocalyptic number.

It is an amenable number.

16620435753 is a deficient number, since it is larger than the sum of its proper divisors (5545202775).

16620435753 is a wasteful number, since it uses less digits than its factorization.

16620435753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264383.

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 16620435753 in words is "sixteen billion, six hundred twenty million, four hundred thirty-five thousand, seven hundred fifty-three".