16620435754 has 16 divisors (see below), whose sum is σ = 26850561192. Its totient is φ = 7670351808.

The previous prime is 16620435737. The next prime is 16620435773. The reversal of 16620435754 is 45753402661.

16620435754 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12000107025 + 4620328729 = 109545^2 + 67973^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16620435754.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524712 + ... + 555484.

Almost surely, 2^16620435754 is an apocalyptic number.

16620435754 is a deficient number, since it is larger than the sum of its proper divisors (10230125438).

16620435754 is a wasteful number, since it uses less digits than its factorization.

16620435754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51561.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 16620435754 in words is "sixteen billion, six hundred twenty million, four hundred thirty-five thousand, seven hundred fifty-four".