16566420935 has 8 divisors (see below), whose sum is σ = 20055632400. Its totient is φ = 13135851904.

The previous prime is 16566420919. The next prime is 16566420961. The reversal of 16566420935 is 53902466561.

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

It is a cyclic number.

It is not a de Polignac number, because 16566420935 - 2⁴ = 16566420919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16566420935.

It is a congruent number.

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, 14659985 + ... + 14661114.

It is an arithmetic number, because the mean of its divisors is an integer number (2506954050).

Almost surely, 2^16566420935 is an apocalyptic number.

16566420935 is a deficient number, since it is larger than the sum of its proper divisors (3489211465).

16566420935 is a wasteful number, since it uses less digits than its factorization.

16566420935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29321217.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 16566420935 in words is "sixteen billion, five hundred sixty-six million, four hundred twenty thousand, nine hundred thirty-five".