16666851828 has 24 divisors (see below), whose sum is σ = 42424714080. Its totient is φ = 5050561120.

The previous prime is 16666851797. The next prime is 16666851829. The reversal of 16666851828 is 82815866661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666851829) 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, 63131883 + ... + 63132146.

It is an arithmetic number, because the mean of its divisors is an integer number (1767696420).

Almost surely, 2^16666851828 is an apocalyptic number.

It is an amenable number.

16666851828 is an abundant number, since it is smaller than the sum of its proper divisors (25757862252).

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

16666851828 is a wasteful number, since it uses less digits than its factorization.

16666851828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126264047 (or 126264045 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 57.

The spelling of 16666851828 in words is "sixteen billion, six hundred sixty-six million, eight hundred fifty-one thousand, eight hundred twenty-eight".