16835001666 has 32 divisors (see below), whose sum is σ = 38491822080. Its totient is φ = 4808523216.

The previous prime is 16835001647. The next prime is 16835001683. The reversal of 16835001666 is 66610053861.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80695 + ... + 200453.

It is an arithmetic number, because the mean of its divisors is an integer number (1202869440).

Almost surely, 2^16835001666 is an apocalyptic number.

16835001666 is an abundant number, since it is smaller than the sum of its proper divisors (21656820414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16835001666 is a wasteful number, since it uses less digits than its factorization.

16835001666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123118.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 16835001666 in words is "sixteen billion, eight hundred thirty-five million, one thousand, six hundred sixty-six".